1.i take my dog out for a wail (once) a day.
2.there's somebody (hiding) beind the door.
3.sandy does her homework (more carefully) than TOM.
4.there are many tall (buildings)on both sides of the street
5.why does she look (worried) today?what'sthe matter?
6.he is old enough.he can doit by (himself)
7.it's great (fun) to piay with my pet.
和楼上的一样!