Hiking by oneself can be fun and good for health.It may also be good for________building.
The school headmaster forbids ______ in the office.
We were listening closely to the lecture yesterday evening when suddenly the light ________.
________ the manager has arrived, we can begin our discussion right away.
---- What ________ great fun it would be if we could light candles to celebrate his birthday!---- Forget it! The teacher in ________ charge of our dorm won’t be happy to see that.
The way ______ was thought of by him ______ the experiment was similar to the way _____ you carried it out.