Mary clapped her hand over her mouth _______ she realized what she had said.
| A．while | B．as soon as |
| C．suddenly | D．then |
She thought herself _______ to her friends because her family was rich.
| A．higher | B．better | C．richer | D．superior |
He is not very confident and always _______ before making a decision.
| A．considers | B．hesitates | C．reflects | D．waits |
Charles Darwin considered ______ to be the process by which evolution took place.
| A．adjust | B．accompany | C．abandon | D． adaptation |
_________, what you did is right. So don’t be worried about it any more.
| A．General speaking | B．Generally speaking |
| C．General spoken | D．Generally to speak |
In our school students are ________ according to how much they know and how old they are.
| A．classified | B．combined | C．listed | D．made |