超星 - 新建作业20211203155858 - 查题吧

单选题

After I _______ for an hour, I realized that he was not coming.

A. was waiting
B. had been waiting
C. waited
D. have waited

单选题

Scientists concluded that smoking ______ harmful to a person’s health.

A. is
B. be
C. being
D. was

单选题

That was the fifth time that he ______ about that touching film in a month.

A. had talked
B. have talked
C. talked
D. was talking

单选题

The nurse ______ on a night shift for several weeks.

A. is working
B. works
C. worked
D. has been working

单选题

We’d better go out tomorrow because Susan ______ the violin all day.

A. will be practiced
B. will be practicing
C. practices
D. would be practiced

单选题

I have no idea of whatSam ______ at this time tomorrow.

A. will be doing
B. will do
C. does
D. is doing

单选题

She ______ her homework when her father came back yesterday evening.

A. does
B. did
C. is doing
D. was doing

单选题

“My father will be here tomorrow.” “Oh Ithinkhe ______ today.”

A. coming
B. is coming
C. will come
D. comes

单选题

I can’t give you an answer before I ______ carefully.

A. .having been thinking it over
B. think it over
C. had thought it over
D. thought it over

2