Convenient ___private cars are for us, they may also cause traffic accidents and pollution.
| A．while | B．as | C．if | D．since |
The girl teacher had to shout to make herself _____ because of the noisy classroom.
| A．hear | B．hearing | C．heard | D．to hear |
. Why _____ so many money recently? I am bored to see you.
| A．are you borrowing | B．have you been borrowing |
| C．have you borrowed | D．did you borrow |
. The computer games you are addicted to _____ dangerous to students’ bodies and spirits.
| A．be | B．is | C．being | D．are |
. You’re so tired. We should have driven the car _____ .
| A．by turn | B．in turn | C．in turns | D．on turn |
Immediately he was elected monitor, James _____ his duties since.
| A．took up | B．has taken up | C．made up | D．has made up |