He didn’t go to bed _______ his mother came back.
When you see this sign, you ______.A. can turn left B. must turn right C. aren’t allowed to turn left or right
–How much did you _______ on this dictionary?-Twenty yuan. A. spend B. take C. cost
Lingling and I are interested in dancing and _______ of us are good at it. A. all B. both C. none
–Your bedroom is dirty. Please tidy _____ up. -Ok, mum. A. it B. its C. them
--- Hi, Sunny, your new flat is so nice!--- Thanks, _____.