Believe in sth = (1) Accept that something exists: ‘Do you believe in ghosts?’; ‘I believe his report.’

(2) Think that something is good or bad: ‘I don’t believe in capital punishment.’

(3) Be confident about something: I believe that he will pass in the test.’

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(1) Have within: ‘The canteen bears fresh water.’(2) Put up with something unpleasant; to suffer; endure; undergo: ‘I can’t bear his constant criticism.’(3) Have rightfully; of rights, titles, and offices: ‘He bears the title of knight.’(4) Take on or accept as one’s own the expenses or debts of another person as an obligation: ‘He agreed to bear the responsibility.’ (5) To hold up; support: ‘The pillar will bear the weight of the roof.’ (6) To bring forth (young); give birth to: ‘She bore twins yesterday.’ (7) Have as a feature; convey: ‘This report bears his signature.’ (8) To produce by natural growth: ‘The tree bears delicious fruits.’

Battle = struggle to do or get something: ‘Doctors are still battling to save the child’s life.’

Fight = use violence to hurt or kill people: ‘My grandfather fought in the Spanish Civil War.’

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Awake is used mainly as an adjective: (1) Not in a state of sleeping; waking; completely conscious: ‘It is going to ten o’clock and the children are still awake.’ (2) Mentally perceptive and responsive; alert; vigilant: ‘They are awake to the impending dangers.’

As a verb, awake (WITHOUT up) is used only in literary styles: (1) To wake up: ‘I awoke to the sound of church bell.’ (2) To rouse to action; become active; to stir up something: ‘His speech awoke my interest in politics.’ (3) To come or bring to an awareness (often followed by to): ‘She awoke to the realities of life.’

(1)To refer in a general way to officials who make all the important decisions in a country, use the authorities or persons who exercise (administrative) control over others: ‘The authorities have entered issued a curfew.’ As a countable noun, authority refers to an official group or organization that controls an area or activity: ‘You can claim housing benefit from your local authority.’ (2) The power or right to give orders or make decisions: ‘He has the authority to issue warrants.’

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Attend is used mainly in formal styles: ‘All committee members are expected to attend the meeting.’ In other styles use be at, come/go (to) or (informal) make it (to): ‘Apart from John and Sue, who else will be at the party?’ ‘Did you go to the match on Saturday?’ ‘We hope you can come but don’t worry if you can’t make it.’

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Do not use a noun phrase immediately after as if and as thought: ‘She looked at me as if/though she’d never seen me before’; ‘He walked with difficulty as if/though (he were) in pain.’

As conjunction: (1) In the same way that it would be if: ‘It looked as if she were made of ice, (2) That: It seemed as if the meeting would never end, (3) indicates something is unlikely and should not be considered: ‘As if it is going to be of any use to me!’

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Artificial = contrived by art rather than nature or unreal or not of natural origin: ‘I still prefer sugar to all those artificial sweeteners’; ‘Most people look better under artificial light.’

Man-made = made or caused by people, although sometimes having a natural appearance: ‘This canal is the longest man-made waterway in the world.’

Synthetic = not natural but made by a chemical process: ‘Many old herbal remedies have been replaced by synthetic drugs.’

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