_________ my grandfather grew older, he lost interest in everything except fishing.
#31540
A
While
B
When
C
As
D
Since
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Professor Hawking stepped into the office he knew that there was no hope.
#31847
A
Unless
B
Now that
C
The moment
D
Although
well prepared you are，you still need a lot of luck in finding a suitable job．
#30191
A
However
B
Whatever
C
No matter
D
Although
He is welcome to come along, he behaves himself.
#30581
A
provided that
B
so far as
C
even if
D
in case
Staff are allowed to take a ten-minute break every two hours to relax, use the bathroom or do ___________ else is necessary.
#32537
A
something
B
anything
C
whatever
D
what
I had walked a few steps _______ I realized that I was lost in the thick fog.
#80162
A
unless
B
Before
C
When
D
since