問題詳情

41. Birds can seem to be everywhere during the day, flitting among trees, foraging on the ground,visiting feeders and ______ on every available stick, post or wire.
(A) perch
(B) perched
(C) perching
(D) perches

參考答案

答案:[無官方正解]
難度:計算中-1
書單:沒有書單,新增