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 |
We will take _____ wants to go there for a sight-seeing .
| A．whoever | B．who | C．anybody | D．all that |
I think the doctor is able to care of _____ is the matter with your son .
| A．all | B．what | C．whatever | D．anything |
Let us not waste ______ time we have left .
| A．the little | B．little | C．a little | D．a little more |
_____ in thought , he almost ran into the car in front of him .
| A．Losing | B．Having lost | C．Lost | D．To |
______ to somebody , a British person often shakes hands with the stranger .
| A．Introducing | B．To introduce | C．To be introduced | D．On being introduced |