_____ is known to everybody, the moon travels round the earth once every month.
| A．It | B．As | C．That | D．What |
Miss Li always tries her best to create an atmosphere in class ______ can help her students practice their speaking skills.
| A．for which | B．which | C．where | D．of which |
Marry had made up her mind to give it up, but on _________ second thought she determined to have __________ third try.
| A．/ ; / | B．a; a | C．the; a | D．/ ; a |
Angela Markel says European Union could fail if Eurozone (欧元区) over debt problems in Greece, Italy and other weaker economies.
| A．pulls up | B．pulls down | C．breaks up | D．breaks down |
— Hi，Michelle， I can’t find my e-dictionary.
— Sorry，I it. I guess I put it on the top shelf with my things.
| A．had used | B．used | C．was using | D．am using |
When ___ to danger and conflict, men tend to increase blood pressure, ___ nervous and anxious.
| A．exposed; felt | B．exposing; feeling |
| C．exposing; felt | D．exposed; feeling |