30. Immunologists have determined that some germs ________ us sick, but not all germs are bad.
(A) making
(B) do make
(C) not make
(D) are not making

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統計: A(200), B(319), C(50), D(43), E(0) #717671

詳解 (共 3 筆)

#2435487

"do make" us sick:助動詞 do在此為加強語氣

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#1137931
免疫學家已經確定,有些細菌使我們生病,但不是所有的細菌都是壞的。
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#4227289
Immunologists have d...
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