________ happens in the world makes us happy and sad by turns.
#80286
A
That
B
What
C
Which
D
Whether
推荐题目
It is best to eat three meals a day; otherwise, it is possible____ your health will suffer later in life.
#30211
A
that
B
when
C
while
D
as
Sally worked late in the evening to finish her report ____ her boss could read it first thing next morning．
#31782
A
so that
B
because
C
before
D
or else