阿摩線上測驗
11. The economic recession shows no sign of improving, so it is high time we ____ every effort to live in an economical way.
(A) must make
(B) need to make
(C) make
(D) made
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統計： A(1), B(1), C(1), D(1), E(0) #3313184
統計： A(1), B(1), C(1), D(1), E(0) #3313184
