________ every student aware of the importance of study, they would study efficiently.
| A．Were | B．Should | C．May | D．Had |
—I read the 21st Century Senior 2 Edition every day.
—_____ no wonder that your vocabulary is so large.
| A．There is | B．There will be | C．It is | D．There could be |
Susan decided not to work on the program at home because she didn’t want her mother to know what she _____.
| A．has done | B．had done | C．was doing | D．is doing |
How often do you visit your grandparents?
| A．Every other week. | B．Two weeks. | C．For two weeks. | D．For a few weeks. |
The water _____ cool when I jumped into the pool for morning _____.
| A．was felt; exercise | B．felt; exercise | C．feels; exercises | D．is felt; exercises |
Gun control is a subject _____ Americans have argued for a long time.
A. of which B with which C. about which D. into which