16. People _____ hobbies which offer enjoyment, knowledge and relaxation.
| A．bring up | B．set up | C．pick up | D．take up |
31. The cheering went on for quite some time _____ it died down and people took their seats again.
| A．Before | B．Since | C．As | D．When |
30. —I _________ his telephone number.
—I have his number, but I _________ to bring my phone book.”
| A．forget, forget | B．forgot, forgot | C．forgot, forget | D．forget, forgot |
29. He was busy preparing a speech , only _______ once in a while to rise from the table for a tea .
| A．stopping | B．to stop | C．to have stopped | D．having stopped |
28. Mr. Duncan raised an unnecessary question _______ he then failed to find an answer.
| A．with which | B．for which | C．to which | D．by which |
27. I don't like to go swimming with my class even though I like to swim because I am so embarrassed _______ in my bathing suit.
| A．to see | B．to be seen | C．Seeing | D．Seen |