－You should pay attention to the traffic light ______ you cross the street.
－Sorry, I will be careful next time.
A. until B. since C. after D. before
－The weather report says that it will be sunny tomorrow.
－It’s wonderful. It _____ for a week already, we need the sun.
A. rains B. will rain C. has rained D. was raining
－What do you think of the pollution?
－______ it’s serious, everyone can do something to save the world.
A. Unless B. Although C. However D. Because
－Food safety is a big problem now.
－______, the government has taken some steps to solve it.
A. Luckily B. Hardly C. Easily D. Sadly
－Chinese Football Team beat the team from Korea on March 22nd.
－They ______ really hard. There is no success without effort.
A. studied B. enjoyed C. compared D. practised
－We should wait in line in the dining hall.
－Yes, ______ of the students should keep the rule in mind.
A. both B. either C. all D. neither
