有几个题帮忙做一下1.用一条30m的铁丝围成一个直角三角形,要使一条直角边为5m,求另一直角边和斜边的长度.2.My f

有几个题帮忙做一下
1.用一条30m的铁丝围成一个直角三角形,要使一条直角边为5m,求另一直角边和斜边的长度.
2.My father shows an interest in playing chess.【同义句转换】
My father ? ? ? playing chess.
3.I think everyone will be ? in the film decause it`s very .【完成句子】
4.Do you want ? 【邀请】LiLei to dinner with us?
5.He has ? for two years. Two years ? a long time.
A.left home; are B.be away for from home; is
C.leave home; is D.be away from home; are
第一题要有过程，谢了！