15.______ Anopheles mosquito bites a human being or other animal suffering from a certain disease,
it carries off the disease germs in its saliva.
(A) An
(B) However an
(C) Whenever an
(D) That an
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統計: A(61), B(73), C(466), D(123), E(0) #1858104
統計: A(61), B(73), C(466), D(123), E(0) #1858104