My mother ________ in the kitchen when the rainstorm came.( )
A.was cookingB.is cooking
C.cooks
Could you tell me who the man wearing sunglasses is?
Certainly.He is_____coach.He teaches _____to play baseball.( )
us; our
ours; us
our; us
When will the graduation ceremony be held?
Oh,it will be held____9 a.m.next Friday.Don't be late.( )
on
at
in
The summer vacation is coming.Why don't you go to the beach to enjoy the sunshine?
Sounds great.____advice!( )
What good
How good
What a good
The group had to wait ______ after 12to check in at the hotel.( )
from
until
for
What should we do to protect the fish in the river?
We_______ throw rubbish into the river.( )
need
needn't
must
mustn't