What makes the space shuttle _____ is that it takes off like a rocket but lands like an airplane.
| A．exceptional | B．strange | C．unique | D．rare |
No matter how, it is not necessarily lifeless.
| A．a desert may be dry | B．dry a desert may be |
| C．may a desert be dry | D．dry may a desert be |
You are old enough to your own living.
| A．win | B．gain |
C．take | D．earn |
Twenty students want to attend the class that aims to teachto read first.
| A． | what | B． | who | C． | how | D． | why |
What are you doing out of bed, Tom? You're to be asleep. ,
| A．supposed | B．known | C．thought | D．considered |
If you __ go, at least wait until the storm is over.
| A．can | B．may | C．must | D．will |