We usually have a flag﹣raising ceremony Monday.( )
in
at
on
for
Must we finish the work today?
________.We have something else to do tomorrow.( )
Yes,we can
No,we can't
Yes,we must
No,we needn't
It's sports time.Most ________ students in Class 1are playing football on the playground.( )
boy
boys
boy's
boys'
You should ask Bob ______ his own clothes.He is ten years old now.( )
wash
washes
washing
to wash
It's hot today.Have some ______ please.
No,thanks.I'm not thirsty at all.( )
water
potatoes
bread
cakes
I ______ the History Museum twice.I've learned a lot there.( )
visit
am visiting
have visited
will visit