The oil must be used up, the light went out.
| A．for | B．because | C．since | D．as |
In summer, food will go bad if_________in room temperature.
| A．leaving | B．left | C．being left | D．having left |
QQ,______you can chat with your friends, makes communication easy.
| A．why | B．which | C．that | D．where |
Someone________his car in front of my house and it is blocking my driveway.
| A．has parked | B．is parking | C．parked | D．had parked |
The film is very humorous but_________can be enjoyed unless you understand English culture.
| A．everything | B．something | C．nothing | D．anything |
---Your composition is full of mistakes.
---I wish I_________more careful.
| A．would have been | B．had been | C．would be | D．were |