The bike needs __________.
______ weather stops me, I go for a walk every day. A. Unless B. If C. As long as
---May I go out to play with my friends now, Dad? ---No. You ______ let your mother know first. A. may B. need C. must
Look! So many passengers on the underground ______ their phones. A. play B. are playing C. have played
I really can’t see anything, the student in front of me is ______ of my view. A. on the way B. in the way C. out of the way
A study shows a ______ walk every day can keep people from becoming fat. A. 30-minute B. 30 minute’s C. 30 minutes’