If we ___________some measures, we might have prevented the environmental pollution．
| A．take | B．had taken | C．took | D．have taken |
He left his hometown in 1990, and great changes _________ ever since.
| A．had taken place | B．took place |
| C．have been take place | D．have taken place |
—Are you coming for dinner?
—I’m not quite sure. I ______ go to my uncle’s instead.
| A．must | B．would | C．should | D．might |
—When can you get my car repaired? I need it tomorrow morning.
—It ______ be ready by 8:00.
| A．can | B．need | C．might | D．should |
________ is known to us all is that the 2016 Olympic Games will take place in Rio de Janeiro.
| A．It | B．What | C． As | D．Which |
I didn’t mean to keep you waiting here for a long time. There are several traffic jams on the way. Can you ____ me?
| A．apologize | B．interrupt | C．forgive | D．behave |