Though iPhone 4 is such a hit product, I won’t buy one unless its after service ______.
#102540
A
was improved
B
gets improved
C
is improving
D
had got improved
推荐题目
The situation wasn’t very good, but I ________ many worse situations.
#102325
A
was experiencing
B
experienced
C
would experience
D
had experienced
Tom is absent this week.Do you know what      to him?
#102933
A
has happened
B
was happening
C
will happen
D
had happened
--- How many concerts ____ up to now?--- About 25. Last night we ____ our biggest one.
#101391
A
did you play, have had
B
have you played, had
C
had you played, have had
D
do you play, have had