So difficult ____that no one could ___ a good solution to it.
#90783
A
was the problem; come up with
B
the problem was; come up with
C
the problem was; put up with
D
was the problem; put up with
推荐题目
That could set off a “credit event,” ______ world financial markets into turmoil（混乱）, much as the collapse(倒闭) of Lehman Brothers ______ in the fall of 2008.
#95443
A
threw；did
B
throwing；did
C
threw；had
D
throwing；had
The increasing use of foreign words may lead to _________ the good qualities of traditional Chinese.
#90855
A
people forgetting
B
people to forget
C
forgetting people
D
people forget
_________ after a long walk, Kate called and said she couldn't come to the party.
#90051
A
Worn out
B
Having worn out
C
To be worn out
D
To wear out
It is careless ___ the same mistake in your composition.
#97333
A
for you to make
B
for you making
C
of yon to make
D
of you making
Not recognizing me at first, __________.
#89976
A
he closed the door
B
the door was closed
C
the door was close
D
I closed the door