问题
The most pleasant thing of the rainy season is _____ one can be entirely free from dust.
A:what
B:that
C:whether
D:why;
B:that
C:whether
D:why;
正确答案是：
同类题型
Class regulations require ______ is the last to leave the classroom ______ off all the lights.
the three deaths in the region, one person was alsoleft missing from the April 25 sandstorm.
It was a pity that the great writer died ______ his works unfinished. [ ]
Can you help me with my English—Oh, sorry. I ________ all day.