___ is everyone’s duty___ the law.
| A．That; do obey | B．It; to obey | C．That; obeying | D．It; obeying |
The crazy fans _______ patiently for two hours, and they would wait till the movie star arrived.
| A．were waiting | B．had been waiting |
| C．had waited | D．would wait |
The hero’s story _______ differently in the newspapers.
| A．was reported | B．was reporting |
| C．reports | D．reported |
An increasing number of students,year by year,across China _______ hard to realize their dream of studying abroad.
| A．try | B．have tried |
| C．will try | D．are trying |
I’m very tired. I _______ on the night shift for several weeks.
| A．worked | B．had worked |
| C．have been working | D．have worked |
Why don’t you put the fruit in the fridge? It will _______ fresh for several days.
| A．be stayed | B．stay |
| C．be staying | D．have stayed |