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      ---What are you busy with ?--- We are carrying out a research ____ the causes of cancer.
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A
into
B
onto
C
to
D
in
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. ---- It’s a secret _____ you and me.
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A
beyond
B
within
C
between
D
among
Tom was _____ to go to bed when the telephone rang.
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A
likely
B
about
C
to
D
around
Deaf people talk ________.
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A
with signs
B
with sign language
C
by signs
D
by speaking sign language
Public attention at the moment is focused___ the problems of industrial relations.
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A
into
B
towards
C
about
D
on
 _____ all my teachers, Mr. Moore is the one who impresses me most.
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A
At
B
On
C
To
D
Of