Điền từ còn thiếu vào chỗ trống, hoàn thành câu

188. He was natural singer with a voice that was as clear as _______.

A. a mirror                 B. a lake                     C. a waterfall             D. a bell

189. If he __________ a thorough knowledge of English, he could have applied for this post.

A. had had                    B. had                      C. has                    D. has had

190. Hanh can't go to the movies with us tonight as she has to __________ her little sister.

A. look after               B. take after                 C. look for                 D. go on

191. How about making posters on energy saving and hanging them around the school? -" __________."

A. No problem.             B. Well, I agree.          C. Great! Let's do that.       D. Very nice.

192. It was a joke! I was pulling your ________.

A. hair                       B. leg               C. toe                     D. thumb            

193. She said to me that she __________ to me the Sunday before.

A. had written            B. has written           C. was writing          D. wrote        

194. You have to study harder in order to _________________ your classmates.

A. keep pace on        B. keep pace with     C. keep pace at         D. keep pace into 

195. John: "Do you think that we should use public transportation to protect our environment?" -            Laura: " _______

A. Well, that's very surprising.                  B. There is no doubt about it.

C. Of course not, you bet!                         D. Yes, it's an absorb idea.

196. Before she left for Australia she promised her parents that she would drop them _______ at least once a month.

A. a word                   B. a note                     C. the news                D. a line

197. It is believed that she’ll be a billionaire by the time she _______ forty.

A. is                            B. was                         C. will be                   D. would be