题目内容

【单选题】Do you have any idea about how many companies __________ in this office building?

A. there are
B. are there
C. there is
D. is there

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【单选题】The presentation of yout product is so important __________ it often determines whether a customer buys from you.

A. than
B. that
C. unless
D. if

【单选题】If I __________ they were on sale online, I wouldn’t have bought the traveling bags in this store.

A. know
B. knew
C. had known
D. have known

【单选题】You need to consider either a paid or volunteer bridge job while __________ full-time work.

A. to seek
B. sought
C. seek
D. seeking

【单选题】My boss refused to give me a pay rise, no matter __________ hard I worked.

A. how
B. where
C. what
D. when