---What are you busy with ?--- We are carrying out a research ____ the causes of cancer.
#27580
A
into
B
onto
C
to
D
in
推荐题目
. ---- It’s a secret _____ you and me.
#27635
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 ________.
#27587
A
with signs
B
with sign language
C
by signs
D
by speaking sign language