二. 选择正确答案填空. (每小题2分,共20分)
( )1. Let _____ help you.
     A. I    B. me  C. my  D. mine
( )2. What ________ Tom reading?
     A am   B is    C are   D does
( )3._____Mary _____ in a hospital ?            

A. Is work B. Are working C. Do works D.  Does work
( )4.----_____is the post office?--- It is across from the bank .
  A. Where B. What C. When D. Who
( )5. --Is this your pencil sharpener?--__________.

A Yes, it is  B  No, it is  C  It's a book

6 ( ) This is ________ backpack. ________ is over there.

A  him; Hers  B her; His  C my; Her

 ( )7. She _____from Africa.
A. s B. are C. come D. am

( )8. . They ______ tennis now?
A. play B. are playing C. played D. plays

( )9. Let’s _________.
A. go home B.to go home C.goes home D.going home