问题
Have you been here before—Yes. This is the third time that I ______ to Shanghai.
A:come
B:came
C:have come
D:had come;
B:came
C:have come
D:had come;
正确答案是：
同类题型
The company provides cheap Internet access.________，it makes shareware freely available.
_______ impressed me was the boy’s ability to deal with this kind of difficult physics problem
You didn’t use to play tennis, ______— Yes. I still like playing tennis now.
is Suzhou Museum from your school –About 30 minutes on foot.