When you have western food, you should use knife and fork properly. The underlined part means”_______”.
There are about 46 ______ people in this country.
_______ Peter is old and weak, he still has to work.
The windows must _________ before you leave the room.
I am very sad that I ______ many chances in the last few years.
—Must we clean the classroom now? —No ,you _______.