(    )13. Keys are used for_the    doors.

A. making    B.    locking    C.    painting    D.    inventing

(    )12. Playing with yo-yo is very easy. Look! You can_it    like    this.

A. make    B.    heat    C.    throw    D.    touch

(    )11. My mother told me that my homework must_on time.

A. finish    B.    be finish    C.    finished    D.    be finished

10. The factory p_ 1,000 cars a week.

9. The girl is very a_.    She likes taking part in all kinds of activities at school.

8. Basketball is a m _ and active sport that is enjoyed by many for fun and

exercise.

7. Mary took my backpack by m_，because mine is the same as hers.

6. Many people believe that tea was first d_  nearly  5,000 years ago.

5. The alarm clock is the most annoying i_.    I really don’t like it.

4. She sings very well, because she has a p_  voice.