1 第19课时 Units13-14 知能优化训练 Ⅰ.根据句意及首字母提示完成单词 1.Don’t throw the l everywhere. 答案:litter 2.His mother couldn’t a to pay for his education. 答案:afford 3.To r books and paper is easy. But it is very important for protecting the environment. 答案:recycle 4.Before you take the medicine, you’d better read the i first. 答案:instructions 5.His grandmother goes shopping with a p basket. 答案:plastic Ⅱ.用括号内所给单词的适当形式填空 1.The environment (pollute) is more and more serious. 答案:pollution 2.I’m sorry I (agree) with you. I have a different idea. 答案:disagree 3.Remember (bring) your homework here tomorrow. 答案:to bring 4.He is looking forward to (hear) from his pen friend. 答案:hearing 5.My mother advised me (ask) my teacher for help. 答案:to ask Ⅲ.单项选择 1.—I didn’t hear you come in just now. —That’s good. We tried any noise, for you were sleeping. A.not make B.not to make C.to make D.making 答案:B 解析:trytodosth.意为“努力/尽力做某事”,其否定形式为trynottodosth.,由句意“尽量不要制造任何噪音”可知答案选B项。 2.—How does Jack usually go to work? —He drive a car, but now he there to lose weight. A.used to; is used to walk B.was used to; is used to walking C.was used to; is used to walk 2 D.used to; is used to walking 答案:D 解析:答句句意:他过去常常开车,但是现在他为了减肥****惯于步行去那儿。usedtodosth.意思是“过去常常做某事”,beusedtodoingsth****惯于做某事”,所以答案选D项。 3.You’d be