.
Mary realized she .
| A．was playing a joke about | B．was making fun of |
| C．was being laughed at | D．was made fun |
The Boston Marathon bombings killed 3 people ,including a Chinese citizen_ Shenyang.
| A．in | B．from | C．across | D．to |
一I really thought I'd pass the driving test．
—Oh，well， , Bill．
| A．you are wrong | B．I agree with you |
| C．best wishes | D．better luck next time |
Anyone in the lab has to the following dos and don’ts.
| A．observe | B．consult |
| C．recognize | D．direct |
It’s really difficult to ______ what he is trying to express.
| A．leave out | B．pick out |
| C．work out | D．make out |
This camera is of good quality. If it ______ break down within the first year, we would replace it with a new one.
| A．would | B．might | C．could | D．should |