1.is=>are
2.are=>is
3.in=>and
4.in=>of
5.where=>what
6.have=>has
7.watchs=>watches
8.do=>does
9.teach=>teaches
10.is=>are
1.A in -> with
2.A ride -> riding
3.B cared -> carely
4.B a -> bỏ
5.D on -> in
6.C do -> will do
7.C are going -> can't go
8.A new pencil -> a new pencil
9.C at -> in