Not until he left his home          to know how important the family was for him.

A. did he begin          B. had he begun       C. he began             D. he has began

 Though ______ to see us，the professor gave us a warm welcome.

A. surprise         B was surprised     C. surprised     D. being surprised

 The palace caught fires three times in the last century, and little of the original building   __________ now.

A. remains          B. is remained         C. is remaining    D. has been remained

 It took me a long time before I was able to fully appreciate what they __ for me.

  A. had done        B. did            C. would do         D. were doing

 After he retired from office, Rogers        painting for a while, but soon lost interest.

A. took up     B. saved up     C. kept up    D. put up

 Studies show that people are more        to suffer from back problems if they always sit before computer screens for long hours.                                         

A. likely              B. possible          C. probable          D. sure 

 _______, she is the sort of woman to spread sunshine to people through her smile.

A. Shy and cautious                     B. Sensitive and thoughtful 

C. Honest and confident                  D. Lighthearted and optimistic

 The fact that she was foreign made _____difficult for her to get a job in that country

A. so              B. much           C. that              D. it  

 The doctor is skilled at treating heart trouble and never accepts any gift from his patients, so he has a very good_____.

A. expectation      B. reputation         C. contribution   D. civilization

 There are over 58, 000 rocky objects in _______ space, about 900 of which could fall down onto _______ earth.

A. the; the           B. 不填; the        C. the; 不填        D. a; the