帮我查查(英语)有没有错?1The singer waved to the people when he got off the airplane.2Don't you thind it is helpful to read more books.3The river is not wide .Can you swim though it?要理由

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帮我查查(英语)有没有错?
1The singer waved to the people when he got off the airplane.
2Don't you thind it is helpful to read more books.
3The river is not wide .Can you swim though it?
要理由

1 对
2Don't you think it helpful to read more books?符合宾语,去掉is
3The river is not wide .Can you swim across it?这个介词最好用across穿过