He was unable to ________ to the students what he meant.
| A．get through | B．get across |
| C．get down | D．get around |
Only after my friend came _____.
| A．did the computer repair |
| B．he repaired the computer |
| C．was the computer repaired |
| D．the computer was repaired |
—Catherine, I have cleaned the room for you.
—Thanks. You____ it, I could manage it myself.
| A．needn’t do | B．needn’t have done |
| C．mustn’t do | D．shouldn’t have done |
The classroom is big enough ____, but we’ll have to move if we have more students.
| A．for the moment | B．on the moment |
| C．in a moment | D．for a moment |
—Can the project be finished as planned?
—Sure, ____ it completed in time, we’ll work two more hours a day.
| A．having got | B．to get |
| C．getting | D．get |
Father ____ for London on business upon my arrival, so I didn’t see him.
| A．has left | B．left |
| C．was leaving | D．had left |