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 teacher said that Columbus _______America in 1492.
#102954
A
discovered
B
found
C
had discovered
D
had found
—Can I help you,sir?—Yes,I bought this radio here yesterday,but it______.
#103923
A
didn’t work    
B
won’t work
C
can’t work    
D
doesn’t work
---Hi, Tracy, you looked tired.---I am tired. I______the living room all day. 
#101772
A
painted
B
had painted
C
having been painting
D
have painted