题目内容

It ___in 1970 that I studied in the school.

A. were
B. was
C. is
D. are

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I won’t go with you, it’s ____cold today.

A. so much
B. too much
C. very so
D. much too

He, not you , chosen to sing some songs at the party.

A. am
B. has
C. are
D. is

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性传播疾病的主要传染源有哪些?

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