For what do people say “thank you”？

They say “thank you” for big favors as well as for ______.

It is important that your homework (do) _____ by yourself, otherwise, you would never know how to do it.

When (heat) _____ iron can be changed into liquid.

What will you say when your adviser helps you to edit your paper？

“Thank you for your help” or “I really ______”

After this agreement is signed by the two parties, both parties shall strictly abide by it.

B)在两党达成协议后，各党派将严格遵守它。

c)在双方达成协议后，各方应严格遵守。

D)在两党签约后，各党派都应严格遵守本协议。

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