---You may find the key to the maths problem on page 107. ---Ah, it’s so simple. I wonder why I ________ of that.
#102456
A
didn’t think
B
haven’t thought
C
wasn’t thinking
D
hadn’t thought
推荐题目
(2013·安徽省芜湖三校一模)A recent study has found that the number of smokers ________ sharply over the past five years.
#99557
A
is increasing
B
are increasing
C
has been increasing
D
have been increasing
The two friends ______on the Internet for three hours, and they would go on till the next morning.
#101929
A
have been chatting
B
had been chatting
C
were chatting
D
had chatted
We are sorry to have to announce that the Leeds train that _____ due to arrive at 12 ： 20 has been delayed by one hour and will now arrive at 13 : 20.
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A
was
B
is
C
will be
D
had been
I ______ while reading the English textbook. Luckily, my roommate woke me up in time !
#104992
A
had fallen asleep
B
have fallen asleep
C
fell asleep
D
fall asleep
When and where to build the new factory ____yet.
#102379
A
is not decided
B
are not decided
C
has not decided
D
have not decided