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Even if you are an experienced teacher, you sometimes ____ make some mistakes.

A. can　 　　 B. must　 　 C. should　 　　 D. will

To test　　　 danger of playing computer games without enough sleep, scientists did
　　 　 experiment.

　 A. a; /　　　　 B. a; the　　　　 C. the; an　　　 D./; an

A lack of ____ of cultural differences to local customs can cause problems.

A. existence　 B. revolution　 C. awareness　 D. evidence

I wish I________ play tennis with them this afternoon，but I have to study for a test.

A．can 　　 　　　　B．should　　　　 C．could 　　 　　 D．shall

I think the English-English dictionary you bought is very useful. I will buy ______ this afternoon.

A. that 　　　　　　 B. one 　　　　　　 C. it 　　　　　 D. this

She said it 　　　　（故意地） to challenge me.?

Wen Jiabao told the orphans in Wenchuan earthquake not to cry. His words ________ not have calmed them instantly, but his concern about common people was obviously seen.

A．can B．must

C．may D．should

____ is known to us all is that the 2010 Asian Games will take place in Guangzhou.

A. It　　　　　　 B. What　　　　　　 C. As　　　　　　 D. Which

He received _______that you oughm’t to expect too much of him.

A. so small education　　 B. such small education

C. so little education　　　 D. such little education