用所给词的适当形式填空。(每空1分，共10分)
（1）Do you like            ( skate)? Yes, I do.
（2）Don’t ___________ (sing) in the library.
（3）How many ______________ (mango)are there in the basket? 
（4）The students are ____________ (learn)how ____________ (draw ).
（5）She would like  ________________(buy)some flowers for the party.
（6）What can he  ____________(do)?He can  ___________(make)a toy bike.
（7）What are you doing? We  ___________(clean)the classroom.
（8）What ___________(do) his sister have?