阿摩線上測驗
10. __ a fire as soon as you arrive at the campsite is a good idea because it will keep you warm as night sets in.
(A) Builds
(B) Building
(C) Have to build
(D) Which to build
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統計： A(0), B(1), C(0), D(0), E(0) #3367316
統計： A(0), B(1), C(0), D(0), E(0) #3367316
