问题

I’m so happy to see you again. Where have you been—Canada! I _______ medicine there for four years.

A:studied
B:had studied
C:am studying
D:study;

正确答案是：

同类题型

I couldn’t understand _____ with you

____he is only 8 years old, he knows more about science than his father.

We have the most population in the world, most of it _____ farmers.

Swimming is __________ diving.

____ you understand the rule, you willhave no further difficulty.