verb
1
BAD : He was afraid of his father and didn't want to come back home.
GOOD : He was afraid of his father and didn't want to go back home.
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Come is used for movement towards the place where the speaker is, was, or intends to be, or towards the person being talked about: 'Come and look at this.' 'Why didn't he come to see me?' 'He was just about to go out when his wife came into the office in tears.'
Go is used for movement in other directions: 'I wish those noisy children would go away.' 'Let's go to London for a few days.'
2
BAD : The students who are coming from Japan are hard-working.
GOOD : The students who come from Japan are hard-working.
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When you mention someone's country or where something was made or grown, use the present simple tense. Compare: 'She comes from
Germany.' (= she was born in Germany) 'She is coming from Germany.' (= she is travelling from Germany)