We must practice_____Chinese every day.
This is _____ and we must _____ on it.A hard work; work hard B a hard work; work hardC 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.