Usually banks require credit card applicants to have an ID card and a（n）（）income.

He’s given me so much help in trouble；I teach his daughter English （）.

A.in turn
B.by turns
C.in return
D.in answer

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It is reported that heavy coffee drinking and heart attack is not necessarily cause and （）.

A.effect
B.affect
C.affection
D.infect

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