—Does he know how to work out the problem? —Yes, he has _______ a good idea to solve it.
#63779
A
caught up with
B
kept up with
C
come up with
D
put up with
推荐题目
With the rapid growth of population, the city _____ in all directions in the past five years.
#63791
A
spreads
B
has spread
C
spread
D
had spread
—Why，Jack，you look so tired!—Well，I ________ the house and I must finish the work tomorrow.
#63774
A
was painting
B
will be painting
C
have painted
D
have been painting
Up to now, our society ________ with limited living space and a shortage of natural resources.
#63760
A
has been challenged
B
is being challenged
C
is challenging
D
has challenged
I know little about the accident because not much ______ about it up to now.
#63758
A
has said
B
has been said
C
had said
D
had been said
I wonder why Jenny ____ us recently. We should have heard from her by now.
#63792
A
hasn’t written
B
doesn’t write
C
won’t write
D
hadn’t written