单项选择题

When he was in the countryside, he（）visit the poor peasants.

A. used to
B. was used to
C. is used to
D. had used to

相关考题

You ought to do（）he tells you. A. where B. because C. a...

单项选择题You ought to do（）he tells you.

A. where
B. because
C. as
D. which