I can't find the shoes I bought last week, so I have to buy another pair.( )
A.whoB.whichC.what
Last night,the shop was closed she didn't buy any chocolate.( )
so
if
or
when
Some old people need a _______ because they feel lonely.( )
gift
stick
pet
watch
By the time the teacher came, we ______ cleaning the classroom.( )
finished
have finished
had finished
_____ walk on the grass.( )
Doesn't
Don't
Not
The coat looks very nice. Can I _____?( )
try it on
try on it
try them on