.A may be given means of flags, lights, and guns.A.sign; byB.signal; inC.signal;
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.A ________may be given ____means of flags, lights, and guns.
A.sign; by
B.signal; in
C.signal; by
D.sign; in
试题答案
C

.A ________may be given ____means of flags, lights, and guns.
A.sign; by
B.signal; in
C.signal; by
D.sign; in
C