21. —茶葉在中國什么地方生產(chǎn)？

--嗯，在中國很多不同地方。 

—Where_tea_in China?

—Well，_many  different_。

(    ）20.    If the question_incorrectly,_question    will    be    given to you.

A. answers，another    B.    answers，other

C. is answered,another    D.    is answered，other

(    )19. The classroom_by the students every day.

A. cleans    B.    is cleaning    C.    does clean    D.    is cleaned

(    )18. —Do you often plant trees in spring?

—Yes. Many trees_in    our    village every year.

A. plant    B.    planting    C.    are planted    D.    are planting

(    )17. What did you see_the    art    and science fair?

A. by    B.    at    C.    about    D.    with

(    )16._is    the    painting    made    from?

A. What    B.    Why    C.    Where    D.    How

13.因……而聞名_ 14.茶樹_

15.山坡_

10.用……造成/制成（原材料不易看出 ）_

11.因……而著名/出 名_ 12.在過去；以往_

7.—架模型飛機(jī)_

8.—幅美麗的畫_ 9.樹葉和草 _

4.在……生產(chǎn)或制造_ 5.藝術(shù)和科學(xué)博覽會(huì)_

6.環(huán)（境）保（護(hù)）_