单项选择题
A．the U.S. Open B．tie British championship C．the French Open D．both B and C
28（）A．tryingB．tryC．trialD．the trial
单项选择题28（）
A．trying B．try C．trial D．the trial
A tennis competition between two people is called a ten...
单项选择题A tennis competition between two people is called a tennis（）
A．game B．champion C．open D．match
Advertisement is mainly paid for by （）A．customersB．incr...
单项选择题Advertisement is mainly paid for by （）
A．customers B．increased sales C．the producer D．reduced prices
