In some cities of China， you'll get fined ______you don't walk along the crosswalk while crossing the road．（ ）
A．ifB．thoughC．until
﹣What do you usually do after dinner？
﹣I usually watch news on TV for half____________ hour to know about what's happening．（ ）
A．/B．theC．aD．an
﹣Would you____________ opening the window？ Get more fresh air．
﹣Of course not． I'll do it right away．（ ）
A．considerB．practiceC．suggestD．mind
﹣What do you feel____________ you are looking through the old pictures？
﹣How time flies!（ ）
A．becauseB．thoughC．whileD．unless
﹣Don't forget to keep a safe distance（距离）at least one meter， Jack!
﹣____________．（ ）
A．Sorry， I won'tB．No， I can't do it
C．Not at allD．I hope not
__________
I am． I want this pair of shoes， please．
Sure． That's ¥180．（ ）
A．Do you sell jackets？
B．Who's next， please？
C．Is there a shop near here？
D．What can I do for you？