1.根據(jù)句意及漢語提示寫出適當(dāng)?shù)膯卧~.2.用恰當(dāng)?shù)木渥友a全下面的對話.

①This cake is ____（為）you.You can eat it .
②-Where is Mary?
   -She is in the ____（實驗室）.

       ③____（科學(xué)課）is my sister's favourite.
       ④There are two white____（建筑物）in my school.
2.A:Goodmorning,Li Xiang.
   B:Goodmorning,Ma Jun.
   A:(1)_______________________
   B:There are twenty classes in my school.
   A:(3)_______________________
   B:Yes,there is a big library.
   A:And is there a sports hall?
   B:(4)_______________________We have PE in it .
   A:(5)_______________________
   B:It is on the left of the school gate.