Can you imagine a person _______ in the institutional revolution for doing nothing wrong?
| A．putting into prison | B．to stay in the prison | C．being put into prison | D．to put into prison |
—Where’s my driving license? Maybe I left it at home.
—My Goodness! I ______ you would always take it along.
| A．was to think | B．thought |
| C．have thought | D．have been thinking |
Though the training cost a lot of time and effort, I do think it ______.
| A．valuable | B．significant | C．worthwhile | D．vital |
After careful consideration, he decided to take the position, ______ he knew it would be difficult for him.
| A．even though | B．now that | C．as if | D．so that |
The teacher handed our writings back to us, ______ some necessary changes.
| A．making | B．to have made | C．having made | D．made |
You must ______ that the power is off before you leave the lab.
| A．check | B．know | C．decide | D．examine |