问题描述：
1.Without any help,the work seems even ______（tough）为什么是tougher?
2.If you want to be_____(success),we cannot just wait for chance为什么是successful?
3.Which _______(invent) is the greatest in the world?为什么是invent?
4.Their ______(marry) is a happy one 为什么不是married?
5.your radio _____(can mend) in two days 为什么can和mend中间要有Be
2.If you want to be_____(success),we cannot just wait for chance为什么是successful?
3.Which _______(invent) is the greatest in the world?为什么是invent?
4.Their ______(marry) is a happy one 为什么不是married?
5.your radio _____(can mend) in two days 为什么can和mend中间要有Be
问题解答：
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