根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Encouraging your high school student to do his/her best isn’t as hard as you may think. It does take time and effort, but it should bee part of a daily routine that both you and your teen can enjoy more than dread （担忧）. Here are some tips that can help you.
1. 1 Know what classes he/she is taking, what your teen thinks of the teacher and/or ask if your teen feels he/she is learning anything. This is excellent dinner table conversation if you can keep it light and positive.
2. Set the expectations. 2 You would not do your teen any favors by not telling him/her what grades you will be expecting. Send a clear message to your teen about the grades you expect to see in each class. 3 Keep your expectations in line with what your teen feels he/she can do.
3. 4 While your teen will need to keep his/her goals in line with your expectations, he/she may have a goal that he/she feels is important too. Learning to establish goals teaches independence, one of the things your teen needs to learn to bee a successful adult.
4. Have what they need at home, or a way to get it. 5 Your family should have library cards and a way to access the Internet for homework. Without these things, your teen could be at a disadvantage. It is also a good idea to set up a mobile homework center.
Finally, don’t forget to praise your teen for a job well done.A．Help him/her establish goals.B．Talk to your teen about school.C．Learning in a classroom is a two-way street.D．Resources are important for high school students.E. Teens need a clear map of what you want them to do.
F. Set a good example and show him/her your love of learning.
G. Set consequences for poor grades as well as rewards for good grades.B
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(答案→)B
解析：
【小题1】根据此段后面的内容：Know what classes he/she is taking, what your teen thinks of the teacher and/or ask if your teen feels he/she is learning anything. 说明是知道他上的什么课，是怎么看待老师的。选B。
【小题2】从第二段的：You would not do your teen any favors by not telling him/her what grades you will be expecting. 如果你不告诉孩子希望他们达到什么成绩，这对他们没有好处。所以选E，要给他们明确的指示该做什么.
【小题3】从前面的句子：Send a clear message to your teen about the grades you expect to see in each class. 关于希望他得到什么分数给孩子明确的信息。所以选G。“不好的成绩要惩罚好的要奖励。
【小题4】从第四段的：he/she may have a goal that he/she feels is important too.说明孩子要有明确的目标，父母应该教会孩子确立目标。选A。
【小题5】最后一段的：Your family should have library cards and a way to access the Internet for homework. 这里的图书卡，网络都是资源。所以选D。