单项选择题
A．The tickets are more expensive than expected. B．The tickets are sold in advance at half price. C．It’s difficult to buy the tickets on the spot. D．It’s better to buy the tickets beforehand.
A．accessing B．amounted C．approaching D．attract E．casual F．characters G．fresh H．ignore I．increasingly J．messages K．patiently L．tiny M．total N．violated O．vital