Look out! Don’t get too close to the house ________ roof is under repair.
| A．that | B．which | C．of which | D．whose |
—Such a mistake could have been avoided.
—Unfortunately, he ________ the mistake again and again.
| A．repeated | B．would repeat | C．had repeated | D．would have repeated |
The student didn’t pay any attention to the lecture; he ________ of something else.
| A．thought | B．had thought | C．would think | D．was thinking |
At the time of the earthquake Jeff was still in his office. He ________ to finish a project before he left for the day.
| A．has tried | B．had tried | C．has been trying | D．had been trying |
We ________ to go skiing tomorrow，but there’s no snow，so we’ll just stay home instead。
| A．are going | B．were going | C．will go | D．would go |
I really ought to go on a diet。I ________ on so much weight since I gave up jogging.
| A．put | B．am putting | C．have put | D．had put |