---Alice, you look puzzled, Have you understood it?---No．I _____another problem just now．
#101781
A
l have thought of
B
am thinking of
C
had thought of
D
was thinking of
推荐题目
Investment by Chinese companies in the US _____ rapidly in recent years.
#99065
A
was growing
B
has been growing
C
had grown
D
will be growing
—What were you doing when I phoned you last night? —I my painting and was starting to take a bath.
#104680
A
have already finished
B
was finishing
C
had just finished
D
was going to finish
I told him what I was surprised____________ his attitude towards his study.
#104815
A
is
B
was
C
at is
D
at was
You’d better go there by train.The train ticket is____ the airplane ticket.
#104027
A
as cheap three times as
B
as three times cheap as
C
three times cheaper than
D
cheaper three times than