Mum, why do I have to wash hands so many times a day?
For your health, you______be too careful.( )
A.can'tB.shouldn'tC.mustn'tD.needn't
Johna soccer.( )
have
has
is
There are two in her family.( )
child
childs
children
I didn't know _____.( )
what we could do
how we could do
what can we do
How long is it since he _____this school?
He _____for three years.( )
has left; has left
left; has been away
leaves; has left
The lights is on.When you leave,please _____.
OK,I won't forget ____it.( )
turn it off; to do
turn off it; doing
turn on it; to do