Remember to _____ the lights when you leave a room.
| A．turn on | B．turn off |
| C．turn up | D．turn down |
Teenagers should_____________ drive. They’re not serious enough.
| A．allowed to | B．be allowed to |
| C．allow to | D．not be allowed to |
_____ they _____ to go to the park when they were children?
| A．Did, use | B．Did, used | C．Do, used | D．Do, use |
--do you improve your English ?
--I improve itpracticing it more often.
| A．How; with | B．What; with | C．How; by | D．What; by |
We had fun __________ in the lake last Sunday.
A. boat B. boating C. boated
Stop _______ on the ice. It’s too dangerous.
A. skatedB. skating C. to skate