The clever boy made a hole in the wall, _______he could see what was going on inside the house.

A. on which                                                     B. at which

C. through which                                             D. in which

 It wasn’t until_______that_______to prepare their lessons.

A. did the teacher come in; the students began

B. the teacher came in; the students began

C. did the teacher come in; did the students begin

D. the teacher came in; did the students begin

If humans________nature, they will suffer sooner or later.

A. care about　　　　　　　　　　　　　　　　　　　　　　　　　 B. fight for

C. take up　　　　　　　　　　　　　　　　　　　　　　　　　　　　D. go against

 This washing machine is environmentally friendly because it uses_______water and electricity than_______models.

A. less; older                                                    B. less; elder

C. fewer; older                                                 D. fewer; elder

 He had a habit of making humorous_______ .

A. remarks                          B. marks               C. sparks               D. remarkably

 —He hasn’t slept at all for three days.

— _______he is tired out.

A. There is no point                                          B. There is no need

C. It is no wonder                                            D. It is no way

 —Why didn’t you continue your work?

—Because the problem puzzled me so much that I needed to_______it_______first.

A. pick; out                                                     B. put; out

C. take; out                                                      D. make; out

 The old man said the accident_______careless driving, so the driver_______the money for the repairs.

A. owing to; owed him to

B. was owing to; owing him

C. caused by;  owed to him

D. was caused by; owed him

 The house caught_______fire last night. It’s said to have been deliberately set_______fire to.

A. /；/                         B. a；a                         C. a；/                         D. /；a

Much ________ many westerners’ horror, the Chinese seem to eat almost every part of every animal.

A. from　　　B. with　　　C. of　　　D. to