句型转换。
He often goes hiking．(改为否定句)
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Trailwalker has been one of the biggest fund-raising events since 1981．(对画线部分提问)
They help the blind persons cross the road．(对画线部分提问)
It is difficult to walk through eight country parks．(对画线部分提问)
Doesn't it look like the real one？(肯定回答)
I think it'll be useful．(改为否定句)
It is good．He gets up early and does morning exercises．(合并为一句，两种方法)
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(2)________________________________
It is important that you have your own support team．(改为同义句)
To keep on passing the football to each other isn't easy for them．(改为同义句)
It isn't ________ ________ them ________ ________ on passing the football to each other．
To sleep for 8 hours every day is very necessary for us．(改为同义句)
It's ________ ________ ________ we ________ for 8 hours every day．