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
This means going back to the place where we left the family ____ in a tree the night before.
#95992
A
to sleep
B
to be sleeping
C
slept
D
sleeping
________ in the early 20th century，the school keeps on inspiring children’s love of art. (2013·安徽，32)
#88747
A
To found
B
Founding
C
Founded
D
Having founded
______ a new house is impossible for the young couple because they haven't saved enough money．
#88601
A
Buy
B
Buying
C
Bought
D
Having bought
______ the scene, he couldn’t help thinking of the description in a book ____ by a British novelist.
#97672
A
Seeing; written
B
Seen; written
C
Being seen; writing
D
Being seeing; written
_______to sunlight for too much time will do harm to one’s skin.
#91843
A
Being exposed
B
Having exposed
C
Exposed
D
After being exposed