Teenagers their health because they play computer games too much.
| A．have damaged | B．are damaging | C．damaged | D．will damage |
— Would you like to go to London with us next week?
— I’d like to, but my parents ______ that I am too young.
| A．are against | B．oppose | C．object | D．explain |
We have planted many trees in order to ____wind and sand in the desert.
| A．hold down | B．hold up | C．hold back | D．hold out |
— So, what do you think of your new roommate ?
— She really ____. She always making loud noises at midnight and when I remind her , she always makes rude remarks.
| A．turns me over | B．turns me down | C．turns me off | D．turns me out |
I_____the problem _____in my mind for a whole week before I did anything about it.
| A．switched; on | B．kicked; up | C．turned; over | D．took; on |
In the swimming race, three boats will be ____in case of an emergency.
| A．standing by | B．turning on | C．getting on | D．running on |