—Jack，I have________working out the math problem．
—Don’t worry．Let me help you．
A．fun
B．trouble
C．experience
—What do you think of the environment here？
—Wonderful！________of the land________covered with trees and grass．
| A．Two fifths；is |
| B．Two fifth；is |
| C．Two fifths；are |
| D．Two fifth；are |
The baby feels________while his mother holds him in her arms．
| A．save |
| B．safe |
| C．safely |
| D．safety |
I saw some________and________dancing in the street the day before yesterday．
A．Germen；Englishmen
B．Germans；Englishmans
C．Germans；Englishmen
He can hardly stay awake because he is so tired，________？
| A．does he |
| B．isn’t he |
| C．can’t he |
| D．can he |
