He was walking ( ) along the corridor. A: back up B: back down C: back and forth D: back of
He was walking ( ) along the corridor. A: back up B: back down C: back and forth D: back of
They have the courage to change and . (take risks, back up, make up)
They have the courage to change and . (take risks, back up, make up)
You can' t ______your promise; all the people here are depending on you. A: back off B: back up C: back on to D: back out of
You can' t ______your promise; all the people here are depending on you. A: back off B: back up C: back on to D: back out of
1.Whenthe control stick is_____, it_____the elevator’s trailing edge, _____the aircraft’s nose_____. A: pushed forward,lowers, pulling, up B: pulled back,lowers, pulling, up C: pulled back,raised, pushing, down D: pulled back,raised, pulling, up
1.Whenthe control stick is_____, it_____the elevator’s trailing edge, _____the aircraft’s nose_____. A: pushed forward,lowers, pulling, up B: pulled back,lowers, pulling, up C: pulled back,raised, pushing, down D: pulled back,raised, pulling, up
Other actions can be taken to back up the policy.
Other actions can be taken to back up the policy.
45（） A: up B: down C: off D: back
45（） A: up B: down C: off D: back
When borrowers started to have trouble paying mortgages back, the ocean of finacing _____. A: dried up B: picked up C: speeded up D: locked up
When borrowers started to have trouble paying mortgages back, the ocean of finacing _____. A: dried up B: picked up C: speeded up D: locked up
Thanksforgetting（）tome. A: Down B: Up C: Back D: Forward
Thanksforgetting（）tome. A: Down B: Up C: Back D: Forward
back up A: 保持 B: 支持 C: 继续 D: 后退
back up A: 保持 B: 支持 C: 继续 D: 后退
She pressed her lips together, trying to _____ tears. A: give up B: burst into C: hold back D: take back
She pressed her lips together, trying to _____ tears. A: give up B: burst into C: hold back D: take back