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live B. enough big。 fell B. fell。 2. 初步接觸過去進行時。 The floor is all wet. Please __________________. A. mop up it B. mop it up C. clean it D. to clean it 活動三、課內(nèi)練習(xí)鞏固 Task2完成下列詞組。 two hundred C. thousands of。 living in ( ) 8. We see lighting ______________ we hear thunder. A. when B. before C. while D. after Task4用所給動詞的適當(dāng)形式填空。 felt ( ) 6. There are ____________ books in the library, and now there are about ____________ students reading in it. A. thousands of。 1. A flood (沖走了 ) away his car. 2. I am reading an article about a car ___________.(事故 ) 3. He couldn’t leave because of the __________( 洪水 ) . 4. Tsunami (颶風(fēng)