---Look! Some people are running the red lights.
---We should wait others are breaking the rule.
A. although B. if
C. unless D. because.
—What’s the matter with Tom? He has been absent for two days.
—Oh! He be ill. Let’s go and ask Ms Brown.
A. can B. need
C. may D. would
She says that she’ll have to close the shop _______ business improves.
A. if B. or
C. unless D. because
The Browns had a party with their neighbors yesterday. _______ all enjoyed themselves.
A. We B. You
C. Them D. They
Liu Xiang announced the retirement (退役) in Shanghai _______ May 17, 2015.
A. in B. on
C. at D. since
I think you can have a __________ try though you have tried twice.
A. third B. three
C. two D. Second
