British scientists have produced _____ they believe is the world’s smallest Christmas card．
| A．which | B．who | C．that | D．what |
The island country is _______ its clean waters and clear skies, which are free _____ pollution of any kind.
| A．well known to; of | B．famous for; for |
| C．well-known for; of | D． famous as; from |
People who ______ athletic sports are generally believed to _____ strong bodies, firm muscles but dull heads, which of course is not the case.
| A．take part in; be | B．like; be |
| C．join ; have | D．go in for; have |
Journalists should base what they report____ facts, not just_____ they imagine to _____.
| A．on; something; be | B．with; everything; have |
| C．on; anything; be | D．by; something; do |
The combination of the two companies had to be suspended(暂停), because neither would _____ to _____ in terms of leadership.
| A．give in; the other | B．give up; the other |
| C．give up; another | D．give in; another |
Personalities ______ from one person to another, ______everybody has his or her own personalities.
| A．change; which is to say | B．change; as is to say |
| C．vary; that is to say | D．vary; what is to say |