题目内容：

It is March now．It is time _____plant trees．Look!______ a little girl there．What is she ______?She is watering _____ flowers．______ are the man and the woman near the house?They are _____father and mother．What _____ they doing?They are planting trees．

Look _____ the children______ the river．They are Young Pioneers．Are they playing ______working?They are working．They're planting trees, too．

1.A. to    B. for    C. of    D. with

2.A. There is    B. There has    C. There are    D. There have

3.A. does    B. do    C. doing    D. to do

4.A. any    B. some    C. /    D. a

5.A. Who's    B. Whose    C. What    D. Who

6.A. girl's    B. girl    C. the girl's    D. the girl

7.A. is    B. are    C. am    D. do

8.A. /    B. after    C. with    D. at

9.A. on    B. from    C. in    D. near

10.A. with    B. or    C. but    D. and