—Does John serve in the army?—No, but he________in the army for 8 years.
#102015
A
would serve
B
has served
C
is serving
D
served
推荐题目
 His father ________ a letter from him since he left without a word .
#103564
A
hasn’t received
B
didn’t get
C
didn’t have
D
haven’t heard
--The window is dirty.----I know. It ______ for weeks.
#101363
A
hasn’t cleaned
B
didn’t clean
C
wasn’t cleaned
D
hasn’t been cleaned
 It’s hard for a woman to run after fashion as it _______ so quickly.
#103019
A
has changed
B
has been changing
C
was changed
D
is changed