The HR department is a critical part of employees’ well-being in any business, no matter _ _ _ _ small it is.
A. how
B. what
C. where
D. which
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_ _ _ _they are invented to be very smart, robots still can’t replace humans.
A. If only
B. Even though
C. As if
D. Just as
These photos remind me of the days _ _ _ _I stayed in Britain, working as a visiting scholar.
A. where
B. when
C. whether
D. how
This website may contain links to other websites _ _ _ _ privacy practices may be different from ours.
A. that
B. Which
C. Who
D. whose
The presentation of your product is so important_ _ _ _it often determines whether a customer buys from you.
A. then
B. that
C. unless
D. if