Another driver had just driven into the back of Jack's car ______ he was waiting at some traffic lights.
| A．since | B．once | C．while | D．during |
Though he didn’t perform well in the French Open, he is still ______ the top ten in the world.
| A．among | B．of | C．in | D．above |
—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 |