同义句 1.why does he keep laughing?2.if you don not water the flowers ,they will die.3.if you clean your room every day,it will be good for your health

why does he not stop laughing ？
if you water the flowers ,they will not die.
if you don‘t clean your room every day,it will be badfor your health

why is he laughing all the time.主要查的是keep的同义词或词组。在这里可用all the time。
water the flowers, or they will die.

1.why does he keep laughing?答案Why is he laughing all the time?
2.if you don not water the flowers ,they will die. 答案Water the flowers,or they will die.
3.if you clean your room every day,it will be good for your health.
答案clean your room everyday,and it will be good for your health. 4.He decides that he will return to his hometown some day.答案Hedecides to go back to his hometown.
5. People all over the world come to this beautiful city. 答案 People around the world come to this beautifl city.

你的问题不够清楚。 我可以猜一下：
1. It will make him optimistic and younger if he keeps laughing.
2. Why do you water the flowers?
3. Why do you clean your room every day?
这是你要的答案吗？

Why is he laughing all the time?
Water the flowers,or they will die.
clean your room everyday,and it will be good for your health.

what he keeps laughing for?(why=what for)
the flowers will die if you don't water them.
it's good for your health to clean your room every day.(it's adj for sb to do sth)