Not all the students obey the rules. Which of the following statement has the same meaning as it.",

A.None of the students obey the rules.

B.All the students don’t obey the rules.

C.No students obey the rules

D.All of the above

Some scientists believe that it won’t be long _______ robots are widely used in all walks of life.",

A.since

B.after

C.before

D.until

—English has large vocabulary, hasn’t it? n
—Yes, nmore words and expressions and you will find it easier to read and communicate.",

A.Know

B.Knowing

C.To know

D.Known

Not until I began to work ______ how much time I had wasted. ",

A.didn't I realize   

B.did I realize  

C.I didn't realize 

D.I realize

The more careful you are while writing a composition,________.",

A.you make the fewer mistakes

B.the few mistakes would you make

C.the fewer mistakes you will make

D.fewer mistakes will be made

To this day, I have trouble _others be fond of me.",

A.let

B.letting

C.being let

D.to let

He is so busy with the research nhe has no time left for any other activity.",

A.which

B.that

C.why

D.because

It was not until he saw his mom _________.",

A.did the little child stop crying

B.that the little child stopped crying

C.the little child stopped crying

D.when the little child stopped crying

—How long is it ______ you picked up your badminton training? n
—It was not until my finance became better last December _____ I started the training.",

A.before; when

B.until; that

C.that; when

D.since; that

A few years ago the belief became general________orange juice and milk should never be drunk at the same meal.",

A.which

B.that

C.and that

D.what