“If I ________ taking drugs, I would be a successful businessman now,” said the dying drug addict. 
#102799
A
didn’t start
B
haven’t started
C
hadn’t started
D
shouldn’t start
推荐题目
---When ______ again?  ---When he ______, I’ll let you know.
#103420
A
he comes; comes
B
will he come; will come
C
he comes; will come
D
will he come; comes
 ——Guess what!I met an old school friend last week.­——How nice!How long____ each other?
#100091
A
didn't you see
B
haven't you seen
C
hadn't you seen
D
don't you see