These diagrams are especially helpful when we have a concrete problem ________ at hand.
#88821
A
be solved
B
to solve
C
solved
D
being solved
推荐题目
Oil prices have risen________32 percent since last year，________a record $84.65 a barrel on Nov.9.
#91331
A
by；reached
B
by；reaching
C
by；to reach
D
to；reaching
______ no bus, we had to take a taxi to go to the station.
#89559
A
There was
B
There to be
C
There had been
D
There being
My parents are ________ to live in the countryside,where the air is clean and the vegetables are fresh．
#96663
A
proper
B
satisfying
C
content
D
disappointed