23. To lower teenager car accident rates, it is essential that every school ______ children about traffic
laws.
(A)will be teaching
(B)taught
(C)teaches
(D)teach
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統計: A(141), B(61), C(348), D(434), E(0) #1942658
統計: A(141), B(61), C(348), D(434), E(0) #1942658