Rather than _______ on a crowded bus, he always prefers________ a bicycle．
| A．ride; ride | B．riding; ride | C．ride; to ride | D．to ride; riding |
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 |
－Jack, why are you late again?
－Sorry . My car _______ on my way to the company.
| A．broke down | B．broke up | C．broke out | D．broke into |
I was too sad to ______my tears when I heard the sad news.
| A．keep up | B．keep out | C．keep back | D．keep away |