假设你是Aunt Tara，请在阅读Kate的来信后给她写一封回信，内容须包括你的建议（至少两条）。
Dear Aunt Tara,
I have a problem with my homework. We have to do it in a group. It has to be finished this Friday, but Gary, the boy in our group, has done nothing helpful. He just keeps rocking the boat.
Every time we talk about the work with him, he always says, "Don't worry. I'll do it later." But he seldom does his job. And when he does, he does it the wrong way. Someone has to do it for him again. What's worse, when Ms. Lin asks about our group, Gary always tells her that we others don't work hard enough. I'm really mad at Gary about this. We're in the same group. Shouldn't we help each other to do a better job? What should I do? Could you give me some advice?
Kate
注意：
1．词数90左右。内容可适当发挥，使短文连贯、通顺；开头和结尾己写好，不计入总词数；
2．短文中不要出现具体的校名和人名。
Dear Kate,
It is important for students to learn how to work together in a group.
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Good luck.
Aunt Tara