— __________ is the boy in blue?— Sorry.I __________ know him. A.Where;doesn’t B.Who;doesn’t C.Who;don’t
This is _____ and we must _____ on it. A hard work; work hard B a hard work; work hard C hard work; hard work D work hard; hard work
I don’t like physics ______ it’s too difficult for me.
—_____ do you _____ the book? —It’s very interesting.
—How ____ can I ____ the books? —Three weeks.
—_____ is it today? —It’s Tuesday.