The old man often looked back on the past days ________ he worked hard to make a living.
#66803
A
which
B
when
C
where
D
that
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He doesn’t like to be interrupted if he_______ . 
#72162
A
speaks
B
will speak
C
is speaking
D
spoke
 _________ get such a book?
#70361
A
Where do you think can I
B
Do you think where can I
C
Where do you think I can
D
Do you think where I can