16. Although he was in ________ trouble, the great man would never lose _______ heart.

  A. / ; /                      B. / ; his                       C. the; /                       D. the; his

17. David and I have a lot _______and become good friends very soon.

 A. in interest                          B. in trouble           

C. in surprise                  D. in common

18. The woman tried to _______ his husband to give up smoking, but she failed.

A. suggest                B. hope                       C. persuade                 D. advise

19. We _____ walk in the moonlight, taking about _____ we were interested in.

A. used to, all what                                B. were used to, all what

C. used to, all that                                  D. were used to, what