Please don’t disturb Tom! He is busy now, with a lot of work ____.
| A．done with | B．to do with |
| C．doing with | D．to be done with |
Is some German friends visited last week?
| A．this school | B．this the school |
| C．this school one | D．this school where |
that they may eventually reduce the amount of labor needed on construction sites by 90 percent．
| A．Such construction robots are clever |
| B．So clever the construction robots are |
| C．Such clever construction robots are |
| D．So clever are the construction robots |
for the fact that she got hit by a car and broke her leg on her way to school, she might have passed the exam.
| A．Hadn’t it been | B．Had it not been |
| C．Was it not | D．Were it not |
Hesitating what to do,.
| A．so let’s not go outing | B．we had to stay home |
| C．the tour was cancelled | D．but we should still take the tour |
The retired man donated most of his savings to the school damaged by the earthquake in Yushu, _______ the students to return to their classrooms．
| A．enabling | B．having enabled |
| C．to enable | D．to have enabled |