My sister _________ for you for an hour.
A. was looking
B. is looking
C. has been looking
D. looked

My sister _________ for you for an hour.
A. was looking
B. is looking
C. has been looking
D. looked

If I were you, I __________ for that English course.
 
A. would have applied
B. will apply
C. would apply
D. should apply

(5x+2).(x-7)=0

(5x+2).(x-7)=0

Not only ______ to determine the depth of the ocean floor, but it is also used to locate oil.

If I weren’t afraid of travelling by air, I ______ to go to American by ship, which took me much longer time.

The man _______ his car outside hasn’t come back for it yet.

By next Saturday, Tom ______ a whole month without smoking a cigarette.
A. will go      B. will have gone     C. has gone                         D. has been going

Why not ________ the meeting until Thursday morning?
 
A. postpone
B. postponing
C. you postpone
D. do you postpone

We’ve had______ problems with our new computer that we had to send it back to the shop.

A. so
 
B. such
C. enough
D. too

If some endangered species ______ in zoos, it would help to ensure their future survival.

Ann has a lot of books, ______ she has never read.

A. most of that     B. most of these      C. most of which             D. which most of them

____ instructed me how to make a good preparation for a job interview.

A. John Robbins, that I spoke to by telephone,

B. John Robbins I spoke to by telephone,

C. John Robbins to that I spoke by telephone,

By the end of this year, Nam _______ English for 7 years , but he will still need more training and experience before he masters the language.

A. will have been studying

B. has been studying

C. will be studying

Geoge wouldn’t have met Mary ____ to his brother’s graduation party.

She has two brothers, ______ are engineers.A. whom both      B. both who    C. both of whom             D. both whom

Linda refused ______ in the musical performance because she was sick.

If he were younger, he ______ a professional running competition now.

A. will join      B. had joined       C. would have joined      D. would join

It is rainlng heavily wlth rolls of thunder. We   such a terrible thunderstorm.

A.     would never see       B. had  never seen          C. have never seen        D. never see

Students will not be allowed into the exam room if they___ their student cards.

A.     produced                    B. hadn’t produced        C. didn’t produce          D. don’t produce

The headmaster has decided that three lecture halls   in our school next semester.

           “Could you turn off the stove? The potatoes                        for at least thirty minutes.”

In our hospital, patients                      every morning.

The boat was sailing north when a terrible storm     __       

 Only one of our  gifted students___  to participate in the final competition.

After the car crash last night, all the injured                                               to the hospital in an ambulance.

A.     was  rushing              B. were rushed                C. was rushed                D. were rushing

When  Peter  was a child, there              a cinema near his house.

A.    used to be               B. used to have            C. used to be being     D. used to have been