As a famous public figure, you have a duty to _________ yourself responsibly, especially in public places.
| A．carry | B．conduct | C．guide | D．operate |
The unemployment rate in this district from 6% to 5% in the past two years.
| A．has fallen | B．had fallen | C．is falling | D．was falling |
—What do you think we can do for our aged parents？
—You do anything except that you visit them as often as possible.
| A．don’t have to | B．oughtn’t to | C．mustn’t | D．shouldn’t |
—Wow， your house is so big！
—Yes， it’s three times yours.
| A．the size as | B．more than | C．bigger as | D．bigger than |
Lily， help me put up the picture on the wall， ？
| A．will you | B．don’t you | C．are you | D．didn’t you |
Cathy is taking notes of the grammatical rules in class at Sunshine School，wher
e she English now.
| A．studies | B．studied | C．is studying | D．was studying |