阿摩線上測驗
126. The manual contains instructions on how to ______ assemble and disassemble the heavy machinery.
(A) safe
(B) safety
(C) safely
(D) safer
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統計： A(32), B(19), C(151), D(4), E(0) #3805314
統計： A(32), B(19), C(151), D(4), E(0) #3805314
