He studies so hard to avoid （ ） at the bottom of the class.

Space vehicles were launched into outer space_____search of another living planet.

It was in the factory （ ） you worked five years ago （ ） you learned the technique.

Do you feel like_____today?

If I had remembered （ ） the window, the thief would not have got in.

Fresh air, enough exercise and nutritious food （ ） to good health.

I won’t call you, （ ） something unexpected happens.

It is by no means clear （ ） the president can do to end the strike.

I advise them to withdraw （ ）.

Only when （ ） in the afternoon （ ） able to leave.

I have two children but （ ） of them likes fruits.

It is （ ） impossible to work with this noise around.