Tìm lỗi những câu sai giúp mình vs
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. We can play tennis now. The others have finished.
Several bombs have gone off in the city centre. It has happened an hour ago.
The meeting will be start at 10.30 tomorrow morning.
We were going to eat in the restaurant, but it was full.
It's a long time since we last visited our grandparents.
I'd like to see a ghost but I had never seen it before.