—You may find the key to the math problem on page 107．—Ah, it's so simple． I wonder why I _ of that．
#100442
A
hadn't thought
B
haven't thought
C
didn't think
D
wasn't thinking
推荐题目
Your desk is covered with too many unnecessary things, including used papers and books. You’d better ________ some of them.
#101200
A
remain
B
replace
C
remove
D
renew
I got caught in the rain and my suit____.
#104002
A
has ruined
B
had ruined
C
has been ruined
D
had been ruined
—Can I help you, Madam?— No, thanks. I_______.
#104508
A
have just looked around
B
just look around
C
just looked around
D
am just looking around
-- Look! Everything here is under construction. --- What’s the pretty small house that ______ for?
#104106
A
is being built
B
has been built
C
is built
D
is building
—I hear Jane has gone to the Holy Island for her holiday. —Oh, how nice! Do you know when she ________?
#104799
A
was leaving
B
had left
C
has left
D
left