【正文】
Unit 2 DNA Lesson 13— Lesson 16 Ⅰ . 用括號內所給單詞適當形式填空。 1. His____(high). 2. There are many ____(sheep)in the field. 3. She does nothing, her job is taking good care of her_______(baby). 4. There clothes_____(make)of cotton. 5. It is too_____(danger)to play with a tiger. 6. Mike _____(sing)this song several times. 7. —Look at this picture。 it is very beautifu —Oh ,I _____(see)it before. 8. —My car ____(lose). —I am sorry to hear that. 9. Look, here is an ___(excite)news. Ⅱ . 單項填空。 1. We have read for an hour. Now let39。s stop ____a rest. A. had B. have C. to have D. having 2. —How clean and tidy your room is! —Thank you. It____ every day. A. is cleaned B. was clea ned C. was cleaning D. is cleaning 3. —How long may I____ the book? —For five weeks. A. borrow B. lend C. keep D. buy 4. The size of this house is muc