1. All of the flowers now raised here have developed from those _______ in the forest.

　　A. once they grew                        B. they grew once

　　C. they once grew                        D. once grew

　　2. In the office I never seem to have time until after 5:30 pm, _____ many people have gone home.

　　A. that                                         B. which

　　C. whose time                              D. by which time

　　3. Is this the reason _______ at the meeting for his carelessness in his work?

　　A. he explained                             B. what he explained

　　C. how he explained                      D. why he explained

　　4. Luckily, we’d brought a road map without ______ we would have lost our way.

　　A. it                                            B. that

　　C. this                                         D. which

　　5. When he was working there he caught a serious illness from _____ efforts he still suffers.

　　A. which                                     B. that

　　C. whose                                     D. what

　　6. It’s said that he’s looking for a new job, one ______ he can get more money to support his family.

　　A. when                                       B. where

　　C. that                                          D. which

　　7. We are living in an age ______ many things are done on computer.

　　A. which                                       B. that

　　C. whose                                       D. when

　　8. The little time we have together we’ll try _____ wisely.

　　A. spending it                                 B. to spend it

　　C. to spend                                    D. spending that

　　9. The old building, behind _______ was a famous church, was _______ we used to work.

　　A. that, the place                            B. it, the place

　　C. which, where                            D. what, where

　　10. We will be shown around the city: schools, museums, and some other places, _______ other visitors seldom go.

　　A. what                                         B. which

　　C. where                                       D. when