-- The classroom looks like a mess!-- Yes, but who left the waste paper ______ around?
Lily is so kind-hearted a girl that she often gives __________ needs her help.
— Are there any flights for Hong Kong tomorrow? — _______ Why not give a call to find it out?
They urged that the library ______ open during the vacation.
The environmentalists said wild goats’______ on the vast grasslands was a good indication of the better environment.
— _______ I ask you something, if you are not busy? —Yes, of course you _______.