( )? 你父母到巴黎呆了多久了？Well, they got there last Wednesday. So about a week. 他们上星期三到那里的。差不多一星期了。
A.When did your parents arrive at Paris
B.How long have your parents been in Paris
C.Did your parents arrive at Paris last Wednesday
D.When will your parents go to Paris
正确答案是B