291. 这道数学题太难，我做不出来。
This math problem is too difficult for me to work out.
292. 我一点都不担忧我的英语。
I dont worry about my English at all.
293. 你最好记下地址。
You had better write down the address.
294. 我会尽量常常给你写信。
I will write to you as often as possible.
295. 总之，忘记不开心的事，继续好好学习。
In a word, forget the unhappy thing and keep on working hard at your lessons.
296. 我相信假如你努力，必然会成功的。
Im sure you can be successful if you try your best.
297. 你读的书越多，你获得的常识就越多。
The more books you read, the more knowledge you will get.
298. 非常高兴收到你的来信。
Nice to hear from you.
299. 只须你用心，没什么是不可能的。
Nothing is impossible if you putyour heart into it.
300. 我期待你的。
Im looking forward to your good news.
