There's no ticket left for Lang Lang's piano concert. you your sister can go to it.( )
A.Both; andB.Not only; but also
C.Either; orD.Neither; nor
The water dark and dirty.It's no longer safe to drink.( )
became
has become
will become
was becoming
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