31. 中国是一个人口众多的发展中国家。
China is a so many people developing country.
32. 由于他的大力支持，我们按时完成了任务。(Due to)
Due to his great surport, we’re finished mission at time.
33. 即使昨天我知道这件事, 我也不会告诉你的。
I won’t told you the thing even I knew it yestoday.
34. 你们必须在两周内读完这些书。
You must read these books over during two weeks.
China is a developing country with a large population.we finished the mission on time .i would not tell youeven if i had known this thing ,yesterdaybooks in two weeks第二句不能说 被完成will would 后面加动词原形在。。。周内 用In呵呵，希望可以帮到你，有不懂的还可以问我^^...
31. China is a developing country with so many people.32. surport 拼写错了，应为support；we're 改成 we've；mission前要加定冠词the；按时是on time。33. 应该用虚拟语气：I wouldn't have told you the thing e...
31. 改为China is a developing country of so many people.32.支持是support。
后边一句改为 we finished the task at time.(mission一般表示使命)33.昨天yesterday不是yestoday!!
改为 I won't tell you th...
