单项选择题
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.
A．It’s awfully dull. B．It’s really exciting. C．It’s very exhausting. D．It’s quite challenging.
A．In the park. B．Between two buildings. C．In his apartment. D．Under a huge tree.