阿摩線上測驗
21. My brothers are good at remembering and finding directions. They _____ the problem of getting lost.
(A) have rarely to face
(B) have to face rarely
(C) rarely have to face
(D) have to rarely face
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統計： A(354), B(138), C(854), D(126), E(0) #3021389
統計： A(354), B(138), C(854), D(126), E(0) #3021389
