.Their leaders often come to see what difficulty the workers have ____ the plan .
| A．to carry out | B．carrying out | C．carri ed out |
D．with carrying out |
The fact __________she hasn’t know the result of the examination is a great surprise to me.
| A．which | B．that | C．what | D．when |
A much better way must be found to achieve an equal________of the resources.
| A．distribution | B．contribution |
| C．catalogue | D．separation |
—On the contrary, I think it is the mother, rather than her children, _________to blame.
—I agree with you.
| A．what is | B．that is | C．who are | D．that are |
.________that we should look after the three dogs three times, my mother left home.
| A．Mentioning | B．Having been mentioned |
| C．Having mentioned | D．Mentioned |
He was so deep in thought, thinking of the problem ________he knocked into the tree without noticing it.
| A．when | B．while | C．because | D．that |