—You speak very good French!                                                                 —Thanks. I ______ French in Sichuan University for four years. 
#102464
A
studied
B
study
C
was studying
D
had studied
推荐题目
Listen to the two girls by the window. What language ________? 
#100338
A
did they speak
B
were they speaking
C
have they been speaking
D
are they speaking
—How did she get infected?  —She ____ the viruses without any protection.
#101750
A
exposed to
B
had exposed to
C
was exposed to
D
has exposed to