One of the responsibilities of the Coast Guard is to make sure that all ships（ ）follow traffic rules in busy harbors.
A.正确答案Bconveniently
B.obediently
C.sufficiently
D.reluctantly
One of the responsibilities of the Coast Guard is to make sure that all ships（ ）follow traffic rules in busy harbors.
One of the responsibilities of the Coast Guard is to make sure that all ships（ ）follow traffic rules in busy harbors.
A.正确答案Bconveniently
B.obediently
C.sufficiently
D.reluctantly
