All the photographs in this book, _______ stated otherwise, date from the 1950s.
| A．unless | B．until | C．once | D．if |
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 |
The teacher has a special way of ______his student’s nervousness when they speak English.
| A．breaking down | B．going over | C．taking off | D．giving away |