阿摩線上測驗
20. The linemen must ___ to the top of the tower to make the required adjustments.
(A) climb
(B) climbs
(C) climbing
(D) climbed
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統計： A(194), B(39), C(41), D(23), E(0) #3637863
統計： A(194), B(39), C(41), D(23), E(0) #3637863
