阿摩線上測驗
1. The findings suggest that it is essential that each participant ____ the protocol precisely.
(A) follows
(B) followed
(C) following
(D) follow
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統計： A(19), B(2), C(9), D(8), E(0) #4003338
統計： A(19), B(2), C(9), D(8), E(0) #4003338
