1.— Have you bought the house?

— No, because I can only _____ 300,000 dollars for it.

A. offer                                  B. spend                                  C. charge                                  D. owe

2.Science___________ many changes in our lives.           

A. has brought out        B. has brought up        C. has brought about        D. has brought back

3.Only by increasing the number of doctors by 50 percent    properly in this hospital.           

A. can be the patients treated                             B. can the patients be treated
C. the patients can be treated                             D. treated can be the patients

4.The match was cancelled because most of the members _____ a match without a standard court.

A. objected to having                                           B. were objected to have
C. objected to have                                              D. were objected to having