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No one can walk the wire without a bit of fear unless ________ very young.

A. having been training   B. trained      C. to be trained    D. being trained

_____,the disease diphtheria would produce a powerful poison that would kill the patient.

A. If it untreated         B. If untreated           

C. To be untreated      D. It being untreated

Your article must be sent by e-mail _______ it can meet the deadline.

A. or else               B. for fear that      C. in case          D. so that

I dared not tell you what he did _______he ______angry with me.

A. in fear of /will be                B. for fear that/be

C. for fear that/would be            D. for fear of/should be

I had given up hope of going to college _______word came that I had been admitted to a famous British University.

A. while          B. when         C. so that       D. until

 ___________, you'll never be able to persuade him.

A. However hard may you try     B. However hard you may try

C. However you may try hard     D. Try hard however you may

Some of you may have finished unit one. ________, you can go on to unit two.

A. If so                B. If not        C. If you see            D. If you may

You must get a good night sleep first,            much work you have to do.  

A. although         B. no matter       C. however           D. whatever

Although the Roma couldn’t be forced to pay taxes, they couldn’t vote ______ they agreed to _____the government.

   A. unless; submit to  B. until; correspond to

C. when; resign to   D. while; compromise to

Patience, without        you can’t do the work well, is a kind of quality.

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