Hi, Bob. How are you doing? It has been a long time _____ we left our junior middle school.
#30918
A
when
B
that
C
before
D
since
推荐题目
________ the calculation is right, scientists can never be sure that they have included all variables and modeled them accurately.
#30263
A
Even if
B
As far as
C
If only
D
So long as
She had golden hair when she was a child, but_________ she got older and older; her hair went darker and darker.
#79955
A
while
B
when
C
after
D
as
His parents were teachers in that school, _______ lost their lives in order to save their students in the earthquake.
#32666
A
none of them
B
both of them
C
none of whom
D
both of whom
_____ we were worried about was _______ they could manage to control the pollution.
#32352
A
That; how
B
That; whether
C
What; that
D
What; whether