She is very dear to us. We have been prepared to do ______ it takes to save her life.
| A．whichever | B．however | C．whatever | D．whoever |
Radar enables the pilot of an airliner to take off, fly and land in _____.
| A．danger | B．comfort | C．continuity | D．safety |
He's the kind of man who is fond of _____ compliments to other men's wives.
| A．paying | B．saying | C．expressing | D．showing |
When a space shuttle has accomplished its _____, it can be ready for another trip in about two weeks.
| A．venture | B．mission | C．commission | D．responsibility |
People cannot but feel _____, for they simply cannot understand how he could have made such a stupid mistake.
| A．puzzled | B．delighted | C．induced | D．inspired |
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 |