將下列句子進行同義句改寫,每空一詞（含縮寫）

題目：

將下列句子進行同義句改寫,每空一詞（含縮寫）
1.If you don't stop dancing,you'll get tired.
If you ______ ______,you'll get tired.
2.I will not be able to finish the work if you don't help me.
I ______ finsh the work ______ ______ help.
3.Get up early,or you'll be late for the meeting.
_______ you _____ get up early,you'll be late for the meeting.
4.Why is he always laughing?
Why is he laughing ______ ______ ______

解答：

(1) continue dancing
(2) can't; without your
(3) If; don't
(4) all the time