— Have you heard of the new robot that can help us do the housework?— Yes. That’s really great, but some people worry that it may ______ laziness.
How _____ students are there in our class? A. much B. many C. about
Today is my first day _____ your school. A. at B. to C. on
There _____ thirty desks in my class. A.is B.are C.be
Go back to your ________, please. A. sitB. seatC. sit down
The blackboard is _______ the wall(墙). It is_________ in the wall. A. on, not B. on, /C. in, no