(1)he is writing a letter ( ) his friend (2)( )a computer ha

(1)he is writing a letter ( ) his friend (2)( )a computer have a mouse?(3)l ( )sweep the floor
(4)there ( ) many books on ths shelf
1.to 2.can 3.are 4.does
把番号填在括号里
我的财富值不够了,所以不能赏给你们,请大家帮我做一做上面的题