—What should we pay more attention to if we go camping in the mountains?—Nothing special. Take a special pair of glasses _______ the wind there is strong and cold. 
#30194
A
even if
B
in case
C
providing that
D
so long as
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Tom has two cousins, and ______ are engineers.
#31634
A
both of whom
B
both of them
C
none of them
D
either of them