The last time we had great fun was _____ we were visiting the Water Park.
A. when
B. Where
C. how
D. why
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Could I speak to _____ is in charge of International Sales please?
A. who
B. whomever
C. whatever
D. whoever
As a new diplomat, he often thinks of _____ he can react appropriately on such occasions.
A. what
B. which
C. that
D. how
People often have this belief ________ development is bad for the environment. But this does not have to be true.
A. that
B. which
C. where
D. how
He asked ______ for the violin.
A. Did I play how much
B. I paid how much
C. how much did I pay
D. how much I paid