The plan put forward at the meeting is________perfect;there’s still much room to improve.
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 _______.
We should take good care of the elderly, as they are ______ to the sudden change of weather.
Can you think of some cases______ drivers obviously knew the traffic rules but he didn’t obey them.