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什么是呼吸作用细胞呼吸的全过程可分为哪几部分

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--Remember the first time we met, John --Exactly. You ______ in the library.

A. were reading
B. had read
C. have read
D. read

--What are you doing this weekend --I haven′t decided yet. ______ --Well, I thought we could have anotherfamily party.

A. What
B. All right
C. Why
D. Pardon

They didn′t accept my invitation atfirst, but I ______ persuade them at last.

A. could
B. was able to
C. might
D. can

We can assign the work ______ isreliable.

A. to whoever
B. to who
C. to whom
D. who