16. When the man ______ to now and again, he repeatedly called for his son.
 A. woke                                                    B. recovered
 C. went                                                     D. came
17. It’s no use ______ to him again. He won’t agree.
 A. talking                                                  B. to talk
 C. talk                                                       D. to have talked
18. ______ to remind him, the church clock struck seven.
 A. As if                                                     B. Even though
 C. Only if                                                  D. So that
19. He stayed in the countryside for quite ______.
 A. some time                                             B. sometime
 C. sometimes                                             D. some times
20. They have arranged ______ the writer to meet a number of his readers.
 A. at                                                         B. in
 C. to                                                         D. for