问题
It is only people know the importance of science science can really serve the people.
A:that； when
B:when； that
C:then； that
D:that； then
B:when； that
C:then； that
D:that； then
正确答案是：
同类题型
When the teachercame in, he saw some boys _______ behind Daniel, _______ the computer games.
Would you like a glass of water —_________________.
the office work, he came to thesitting room and relaxed a while.
When ____ to danger and conflict, men tend to increase blood pressure, ____ nervous or anxious. [ ]