--- Why do you look so upset? --- There are so many troublesome problems _________.
#89699
A
remaining to settle
B
remained settled
C
remaining to be settled
D
remained to be settled
推荐题目
Which material can be thrown into the sea ________ on the nature of the material?
#90586
A
depended
B
depending
C
to depend
D
depends
Every minute is made full use of __ at our lessons.
#98680
A
to work
B
working
C
having worked
D
being worked
______ 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
Most computer users think it necessary for their software ________ regularly．
#89719
A
to up date
B
to be updated
C
to have been up dated
D
to have updated
Microblogs experienced rapid growth in 2011 in China, with the number of microblog Operators, users and visitors ________ several times.
#95156
A
to increase
B
increased
C
increasing
D
increase