981.The fact has worried many scientists _____ the earth is becoming warmer and warmer these years.
A.what
B.which
C.that
D.though
982.Could I speak to_____ is in charge of International Sales please?
A.who
B.what
C.whoever
D.whatever
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981.The fact has worried many scientists _____ the earth is becoming warmer and warmer these years.
A.what
B.which
C.that
D.though
982.Could I speak to_____ is in charge of International Sales please?
A.who
B.what
C.whoever
D.whatever