—Why! Where’s my mobile phone? Maybe I left it on the plane.
—My goodness! You things behind.
| A．haven’t left | B．didn’t leave | C．had never left | D．never leave |
Joan has been missing for a couple of days and there is growing _____for her safety.
| A．attention | B．danger | C．concern | D．hope |
The year 1949 _____the birth of a new country---the People’s Republic of China.
| A．watched | B．noticed | C．saw | D．recorded |
It was not until Tom took off his dark glasses that I _____ him.
| A．recognized | B．knew | C．discovered | D．realized |
Call me when you_ ____at the railway station, Alice, I’ll go there to meet you.
| A．arrive | B．would arrive | C．have arrived | D．are arriving |
---My God! I’m getting late again. What will my boss say?
---You can keep _____now only if you make an honest explanation.
| A．silent | B．calm | C．peaceful | D．quiet |