I like teachers ______ always encourage us to do something we are interested in.
It’s bad for us to __________ at night.A. stand up B. take up C. stay up
—How much ______ this pair of shoes?—Ten dollars ______ enough.A. is, is B. is, are C. are, are
This is the tallest building ________ I’ve ever seen.A. which B. who C. that
Sally has a beautiful ________. Listen! She is singing very well.A. accent B. noise C. voice
Nowadays, many young children like chatting ________thier friends _______ the Internet.A. with, in B. with, on C. for, on