超星 - part II structure - 查题吧

单选题

So far our company _____ exceptional lawn services to residential and commercial customs for 20 years.

A. will provide
B. had provided
C. provided
D. has provided

单选题

______ you want some samples for our new products, you might contact our sales manager.

A. If
B. Whild
C. Until
D. Although

单选题

As a sales person, _____ John lacks his confidence when he is talking with clients.

A. which
B. what
C. why
D. that

单选题

If I _________ his email address, I would have sent him a message yesterday.

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

单选题

John spent a lot of time ________to his colleagues how challenging the project was.

A. explain
B. explaining
C. to explain
D. explained

单选题

It is the high efficiency of the new equipment ___ has increasingly attracted our attention.

A. which
B. what
C. that
D. who

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