单项选择题
When we arrived at the airport, we were told our flight （）.
A．cancelled B．had cancelled C．has been cancelled D．had been cancelled
单项选择题 Jenny: Well, it is time for boarding. Robert: （）.
单项选择题 Speaker A: Would you like to go with me for a movie tonight Speaker B: （）.
单项选择题 There are many theories that （）to be able to predict whether you will give birth to a girl a boy.
