单项选择题
A．The woman has trouble getting along with the professor. B．The woman regrets having taken up much of the professor’s time. C．The woman knows the professor has been busy. D．The woman knows the professor has run into trouble.
A．To show off their wealth. B．To feel good. C．To regain their memory. D．To be different from others.
A．He saw the big tower he visited on TV. B．He has visited the TV tower twice. C．He has visited the TV tower once. D．He will visit the TV tower in June.