We could see nothing because the lights suddenly ______.
| A．went on | B．went over | C．went down | D．went out |
—What happened ________Sarah?
—She failed in the English test.
| A．to | B．with | C．in | D．on |
Several ________ students came to the meeting.
| A．thousand | B．thousands | C．thousand of | D．thousands of |
This book is ________for a six-year-old child to read.
| A．enough easy | B．enough easily | C．easy enough | D．easily enough |
The window was broken. Try to ________who has broken it.
| A．find | B．look | C．find out | D．look for |
Don’t forget to turn ________the lights when you leave the office.
| A．on | B．off | C．up | D．in |