题目内容

According to the economist, industrial management __________ the most prominent business management in China for the past few decades.

A. has been
B. had been
C. was
D. be

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According to the contract, if the building project __________ by the end of this month is delayed, the construction company will be fined.

A. being completed
B. is completed
C. to be completed
D. completed

I got a terrible headache today, and my pain __________ apparent, for the moment I walked into my office this morning, the first man I met asked sympathetically.

A. must be
B. had to be
C. had been
D. must have been

For him to be reelected in the election year, what is essential is not whether his policy works but whether the public believe that it __________.

A. does
B. is
C. do
D. are

As is known to us, human behavior is mostly a product of learning, __________ the behavior of animals depends mainly on instinct.

A. whenever
B. whether
C. whichever
D. whereas