________ is very difficult for us ________ so much work in so little time.
[ ]
|
A.It; finish |
B.It; finishing |
|
C.He; to finish |
D.It; to finish |
________ is very difficult for us ________ so much work in so little time.
[ ]
|
A.It; finish |
B.It; finishing |
|
C.He; to finish |
D.It; to finish |