______ it is true that a student’s most important goal is to do well in his or her studies, it doesn’t need to be the only goal.
| A．When | B．As | C．While | D．Before |
The biggest cities in Canada only have about six million people while _______ in China are much larger.
| A．these | B．those | C．ones | D．others |
____ with what the students had done, the teacher praised them highly.
| A．Delight | B．Delighting | C．Delighted | D．Being delighting |
you can borrow my caryou promise not to drive too fast.
| A．unless | B．even if | C．in case | D．as long as |
Not until____ did Humphrey begin working.
| A．did it stop raining | B．had it stopped raining | C．it stopped raining | D．it stops raining |
21st Century, ____weekly newspaper, provides us with____variety of fresh articles about campus studies and life.
| A．a, the | B．the, a | C．the, / | D．a, a |