Now there are already robots _________ in factories.
---There was something wrong with my TV set. Can you mend it? ---Let me see. I think I can _______.
The mooncakes with nuts are ______ than the ones with meat.
There was a _____ rain yesterday evening. It rained ________.
There is _____ river at the foot of the mountain(山). _____ river is dangerous.
--- _________are you late for school? ---Never.