As he is in B. He is in C. Being in D. He being in
The boy was sitting _____ his mother, _____ his back _____ the door.
We can never forget the days _______ the two astronauts in spaceship worked together and the days ________ we spent together.
_____ teachers are looked down upon.
This is the second time Nie Haisheng ________ to be the astronaut who took the glorious task.
Fei Junlong’s wife and his child ________ to see him off before the launch, but they failed because of the rules.