The library needs __________, but it’ll have to wait until Sunday.
#91278
A
cleaning
B
be cleaned
C
clean
D
being cleaned
推荐题目
The students expected ____ more reviewing classes before the exam. 
#95664
A
there to be
B
there are
C
there being
D
there to have
To succeed in a difficult task ,______________.
#97643
A
Persistence is needed
B
Persistence is what you need
C
One needs to be persistent
D
A persistent nature is needed
 _____ a reply, he decided to write again.
#91920
A
Not receiving
B
Receiving not
C
Not having received
D
Having not received