Could I speak to ______ is in charge of International Sales please?
A. who
B. what
C. whoever
D. whatever
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The reason _____ I was sad was ______ he didn't understand me.
A. why; because
B. that; that
C. why; that
D. that; because
I think father would like to know _____ I've been up to so far, so I decide to send him a message.
A. which
B. why
C. what
D. how
News came from the school office _____ Wang Lin had been admitted to Beijing University.
A. which
B. what
C. that
D. where
The companies are working together to create _____ they hope will be the best means of transportation in the 21st century.
A. which
B. that
C. what
D. who