语法填空（共10小题；每小题1.5分，满分15分）阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，并将答案填写在答题卷

语法填空（共10小题；每小题1.5分，满分15分）
阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，并将答案填写在答题卷标号为31-40的相应位置上。
The president’s message to students was simple: study hard, pay attention in class and embrace the opportunity to learn.
We can have the most dedicated teachers, the most 31 (support) parents and the best schools in the world. And none of it will make a difference; none of it will matter, 32 all of you fulfill(履行) your responsibilities, Mr. Obama said.
It was a presidential talk 33 (deliver) at a time of economic uncertainty for many American families. Mr. Obama said he understood the tensions 34 many students faced. But that was no excuse 35 neglecting their homework or cutting class or dropping out of school.
Critics of the president strongly criticized the speech as an effort by the White House to promote the president's domestic agenda. Some parents 36 (tell) their children to resist the address.
A Colorado student stayed away, 37 (think) their parents should be 38 to push them more in their education rather than the president.
But 39 mother in North Carolina said she thought the 40 (speak) could have a positive impact. When kids get to hear something about motivation from someone like that, it's fantastic, she said. 31. supportive 32. unless 33. delivered 34. that/which 35. for 36. told 37. thinking 38. those 39. a 40. speech

(答案→)31. supportive 32. unless 33. delivered 34. that/which 35. for 36. told 37. thinking 38. those 39. a 40. speech 解析：可联系答.案.网客服索取。

就是这个解释