問題詳情
8. Monarch butterflies, ______ Mexico from Canada and the United States,covered about 10 acres this winter, an area more than three times as large as lastyear.
(A) which fly each year to
(B) flying each year
(C) fly each year to
(D) flyeach year in
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