There are many flowers________the tree and there are some birds________the tree.
A.on, in B.in, in C.in, on D.on, on
I can’t imagine you________alone.
A.traveling B.travel C.to travel D.to traveling
—Who teaches________math?
— I teach________.
A.your, myself B.you, myself C.you, me D.you, herself
________use of the Internet has dramatically changed the way________world does business.
A.The, the B.The, a C.A, the D.A, a
He usually flies kites in________ spring. But he didn’t do it in________spring of 2010 because of his illness.
A./, / B.the, / C./, the D.the, the
走在长沙的大街小巷，我们可以看到“打赢蓝天保卫战”的口号标志，越来越多的市民已经认识到环境保护的重要性，还天空以蓝色需要我们共同的努力。请你写一篇英语短文给某英文网站投稿，谈谈目前的环境污染问题以及你对环境保护的建议。
要求：1.包含以上要点，行文连贯；
2.80词左右；
3.文中不得出现真实的人名和校名。
