The research is so designed that once________nothing can be done to change it.
#5001
A
begins
B
having begun
C
beginning
D
begun
推荐题目
It was ________ Benazir Bhutto, former Pakistan prime minister, was leaving the rally(集会) that the suicide bomb happened, ________ the world felt sorry.
#5015
A
when; for which
B
as; which
C
since; for which
D
after; which
Expo 2010 Shanghai China will offer ____ wonderful opportunity for ____ cross - culture dialogues．
#4793
A
a;不填
B
a; the
C
不填;the
D
the;不填
People traveling long distances frequently have to decide ______they would prefer to go by land, sea or air.
#59055
A
which
B
how
C
why
D
whether
--- Are you unsatisfied with what he has given you ? --- Sure．It couldn’t be ______ .
#4639
A
any worse
B
so bad
C
much better
D
the worst