The foreign guests, ____ were government officials, were warmly welcomed at the airport.
| A．most of them | B．most of that | C．most of whom | D．most of those |
During the examination we are required to stay in our seats, keep our eyes on our work, ____ to anyone.
| A．instead of speaking | B．rather than speak |
| C．and not to speak | D．but would not speak |
________ these experiments were successfully completed would we think of going into humans.
| A．If only | B．Only if | C．So that | D．Even if |
Currently, many American women are still faced with the ________ of choosing between work and family commitments.
| A．desperation | B．dilemma | C．confusion | D．Concern |
Tony ________ full marks, but he was so careless as to make a spelling mistake.
| A．could have gained | B．can have gained |
| C．must have gained | D．must gain |
Recently some Japanese have been trying to make conflicts with China, ________ effects we are greatly concerned.
| A．to whose | B．about whose | C．to which | D．about which |