The company had about 20 notebook computers but only one-third __________ used
regularly. Now we have 60 working all day long.
| A．is | B．are | C．was | D．were |
Few weight-loss pills can help to keep people slim, __________?
| A．do they | B．don’t they | C．can’t they | D．can they |
Usually there is a blackboard on the front wall in the classroom, _________there is a slogan.
| A．above which | B．in that | C．on which | D．from that |
Finding the ______look on the student’ s face, the professor felt _____about his explanation.
| A．confusing, embarrassed | B．confused, embarrassed |
| C．confused, embarrassing | D．confusing, embarrassing |
The ancient village, ______ they visited during a recent trip, is the only tourist attraction ______ is well protected without any damage.
| A．which, which | B．which, that | C．where, that | D．that, which |
The director is going on business next week and the department will be left ______Jack.
| A．in charge of | B．taking the charge of |
| C．taking charge of | D．in the charge of |