4. He insisted that the thief ______ to be sent to the police station.

A. refers　 B. refer　　 C. referred 　　D. referring

3. Did a man ______himself John ring me up this morning?

A. call　 B. called　　 C. calls　　 D. calling

2. Does the way you thought of _______ the water clean make any sense?

A. of 　making 　B.　 make　　 C. how to make　　 D. having made

1. I worked so late in the office last night that I hardly had time ______ the last bus.

A. to have caught　 B. to catch 　　C. catching　　 D. having caught

20. A. getting　 　　　B. waking up　 　　C. using up　 　D. walking about

19. A. for　 　　　　B. of　 　　　　　C. with　 　　　D. by