Some of the heat near the earth's surface can electricity.

A.use to make B. be used to making C. use to making D. be used to make

Second, don't stop ____ you come to a word or a phrase you do not know.

A.for the first time              B. because                  C. every time                      D. since

The visiting Minister expressed his satisfaction with talks, ____ that he had enjoyed his stay here.

A.had added B. to add C. adding D. added

It is ____ doing exercise in the morning.

A.worth B. value C. worthy D. worthwhile

The system been designed to give students quick and easy ____ to the digital resources of the library.

A.access B. passage C. way D. approach

They are ____ to prefer the better when the best is unattainable.

A.like                   B. willing                    C. will                        D. anxious

The weather turned out to be fine yesterday. I ____ the trouble to carry my umbrella with me.

A.should have taken B. could have taken C. needn't have taken D. mustn't have taken

---Tom graduated from college at a very young age. 　　　

---Oh, he ____ have been a very smart boy then.

A.could B. should C. might D. must

 The first textbook ____ for teaching English as a foreign language came out in the 16th century.

A.have written                    B. being written           C. to be written           D. written

The managers discussed the plan that they would like to see ____ the next year.

A. carry out B. carrying out C. carried out D. to carry out