US president George Bush ____ the war in Iraq on March 20,2003. But internationally, the US war in Iraq _____ as one country misusing its power over a weaker nation.
| A．started, has been criticized | B．has started, had been criticized |
| C．started, has criticized | D．had started, was criticized |
I __________ to be out when you called me this morning.
| A．seemed | B．appeared |
| C．happened | D．thought |
-I was amazed to find that you are an excellent cook.
-I have experience __________ cooking at an Italian restaurant.
| A．of | B．in |
| C．at | D．on |
Strong __________ can be very dangerous for swimmers.
| A．flows | B．columns |
| C．floods | D．currents |
Mr Brown is a（n）__________ secretary in our office, for he is able to do tasks successfully, without wasting time and energy.
| A．effective | B．efficient |
| C．flexible | D．sufficient |
It was nearly an hour __________ the sleeping pill __________ effect.
| A．when; took | B．before; took |
| C．since; takes | D．before; would take |