30. The elephant I saw in the zoo ate _____ all the things the visitors gave it.
---I wonder why he has been acting so strangely these days.---Recent pressure at work may ______ his behavior.
________, the pay isn’t attractive enough, though the job itself is quite interesting.
A good friend from _____I was born showed up at my home right before I left for Beijing.
I can’t leave. She told me that I _______ stay here until she comes back.
We should make____a rule for us that the last to leave the classroom shall turn the light off.