He could speak English fluently because he __________ it for four years when he was a college student.    
#101396
A
had studied
B
have been studying
C
studied
D
was studying
推荐题目
The pen my father sent me as my birthday gift           very well.
#104251
A
is written
B
writes
C
writing
D
has written
Mary __________ a dress when she cut her finger.
#104297
A
made
B
is making
C
was making
D
makes
– May I go to the movies tonight, mum? -- You can when you ____ your homework.
#102509
A
will finish
B
are finishing
C
will have finished
D
have finished