Anyone who are in ________ of weapons without permission are considered lawbreaking.
| A．command | B．control |
| C．charge | D．possession |
The scientists are studying the effects of human activities______the environment.
| A．in | B．at | C．on | D．with |
The law about banning using thin plastic bags came into_____from 1st Jane this year.
| A．existence | B．power | C．sight | D．effect |
I have offered to work for the store owner _____ one night’s stay.
| A．in place of | B．in exchange for | C．in relation to | D．in preference to |
Tom said he had been working for three hours, _____ ,evidently, was untrue.
| A．he | B．this | C．it | D．which |
---May I use your cellphone?
---_____. We are good freinds
| A．No trouble at all. | B．Of course you may |
| C．You are welcome | D．It all depends |