After the meeting, I to write a report on our next term’s work.
Was it ____ it snowed last night ____ he didn’t come?
If you send the best wishes to your mother on Mother’s Day,____will give her a great surprise.
He sat quietly in the room,listening to the rain____the window.
Everyone stood up _____ the hero came into the lecture hall.
So far, the moon is the only one of the heavenly bodies in space ______ reached by manned spaceships.