单项选择题

Launch schedule
24/5-Press conference.
31/5-TV advertising starts. Distribute posters.
7/6-Deliver leaflets. Radio advertising starts.
14/6-Free competition starts on the radio.
How many written forms of publicity are there（）

A. Two.
B. Three.
C. Four.

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单项选择题

A. for 10 hours a day
B. during the business hours without a break
C. after the lunch hour

单项选择题

A. The doors are not in use.
B. Don't wait in front of the doors.
C. Please use other doors.