As _________ teacher, you must believe that you can make ______ difference to the lives of your students.

A. a; 不填 B. a; a C. 不填; 不填 D. 不填; a

The task is very difficult. I wonder whether we will be able to finish it in the ________ of any other helpers.

A. appearance B. escape C. spare D. absence

— Why is the chemical plant closed?

— Because large quantities of waste water ______ into the Yangtze River.

A. has been released B. is being released

C. was released D. have been released

I hope I will not be called on in class as I am not yet ________prepared.

A. attentively B. readily C. actively D. adequately

The news inspired the whole world______ Israeli scientists have invented a kind of magic glasses_________ can let the blind see things.

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

Wait a moment, please. When I _________ writing the letter, I will go shopping with you.

A. will have finished B. have finished

C. will finish D. finished

Just as Professor Scotti often _____it, success is ninety-nine percent mental attitude.

A. gets B. makes C. puts D. means

Deeply moved by her words, ____________. .

A．tears came to his eyes

B．he could hardly hold back his tears

C．tears could hardly be held back

D．his eyes were filled with tears

_____ you have offered 50 yuan , you can telephone for 100 yuan.

A. To provide that B. Provided that

C. Being provided that D. Provide that

— The deadline is drawing, but I failed to challenge the task a third time.

— ______ my brother have a try?

A. Will B. May C. ShallD. Must