161. We are talking to Vietnam which has a population of million people. 
162. I should phone the man whose car I borrowed yesterday. 
163. She can’t speak English which is a disadvantage. 
164. I’m staying with Henry whose father works in a bank. 
165. Do you remember Mrs. Lan, who taught us history?
166. The museum was built in which our class visited last weekend was built in 1805.
167. The man whom I told you about works in the hospital.
168. Do you like the person who sits next to you?
169. The house which my father bought last year costs a lot of money.
170. We are visiting the children whose parents died in the storm. 
171. My sister, who was trained to be a sewer, is rather childish.

161. We are talking to Vietnam which has a population of million people.

162. I should phone the man whose car I borrowed yesterday.

163. She can’t speak English, which is a disavantage.

164. I’m staying with Henry whose father works in a bank.

165. Do you remember Mrs. Lan who taught us history?

166. The museum which our class visited last weekend was built in... ? (hình như thiếu năm).

167. The man whom I told you about works in the hospital.

168. Do you like the person who sits next to you?

169. The house which my father bought last year costs a lot of money.

170. We are visiting the children whose parents died in the storm.

171. My sister, who was trained to be a sewer, is rather childish.