--Did you telephone the manager’s office?
---Yes.He ____ back before 9 this morning.
| A．expects | B．is expected | C．expected | D．was expected |
-How amazing it is that astronauts are exploring outer space!
-It’s a challenge, I guess, ______ man against nature.
| A．of | B．for | C．by | D．about |
-Why does the Lake smell terrible?
-Because large quantities of water.
| A． | have polluted | B． | is being polluted | C． | has been polluted | D． | have been polluted |
–Bruce, I really appreciate your handwriting. 
- _______. .
| A．I practice every day | B．Thank you very much |
C．No, I don’t think so | D．Well, it’s not good enough |
His efforts to raise money for his program werebecause, no one showed any intention to take a cent out of their pockets.
| A． | in place | B． | in sight | C． | in effect | D． | in vain |
You'd sound a lot more polite if you make a requesta question. 
| A． | in search of | B． | in the form of |
C． | in need of | D． | in the direction of |