【小题1】 The rainforests can give us many useful(use) things.【小题2】 Don’t keep your friends wa

【小题1】 The rainforests can give us many useful (use) things.
【小题2】 Don’t keep your friends waiting (wait) so long.
【小题3】Han Mei spends two hours practicing (practice) English every day.
【小题4】 When you’re out, You’d better take care of yourself (oneself).
【小题5】If you want to be thinner, you must eat less (little) food and take more exercise.
【小题6】Running can help you keep healthy (health).
【小题7】Ann is going to go skating (skate) with her classmates tomorrow.
【小题8】Can you tell me your reason forleaving (leave) home in a hurry?
【小题9】He is going away for at least (little) a week.
【小题10】Take care of yourteeth (tooth) or you’ll have a toothache.

解析：【小题1】本题的含义为雨林可以给我们提供很多东西，故本句空格处填有用的单词useful。【小题2】本题的含义为不要让你的朋友等待如此长的时间，keep sb doing sth表示使某人一直做某事的含义，故本句空格处填waiting。【小题3】spend +时间+doing sth表示某人花费多长时间做某事，故本句空格处填practicing。【小题4】本句的含义为当你一个人在外边，你最好照顾好你自己，故本句空格处填你自己的单词yourself。【小题5】本句的含义为如果你想更瘦，你应该吃更少的食物，修饰不可数名词使用less表示更少的含义，故本句空格处填less。【小题6】本题的含义为跑步有助于你保持健康，keep后跟形容词健康的单词healthy。【小题7】本题的含义为安打算和她的同班同学去滑冰，go+动名词表示去做某个活动，故本句空格处填滑冰的动名词形式skating。【小题8】本句的含义为你能告诉我急忙离开家的原因吗，介词for后跟动名词离开的单词leaving。【小题9】本句的含义为他将离开至少一周的时间，at least表示至少的含义，故本句空格处填least。【小题10】本句的含义为保护好你的牙齿，否则你会牙疼，故本句空格处填牙齿的复数形式teeth。

这个解释是对的