____about her son's safety,she made several calls as well as sending him some messages.
____about her son's safety,she made several calls as well as sending him some messages.
A.Concerning
B.Concerned
C.Having concerned
D.To concern
求詳解
A.Concerning
B.Concerned
C.Having concerned
D.To concern
求詳解
英語人氣：790 ℃時(shí)間：2019-08-22 15:37:25
優(yōu)質(zhì)解答
選B,這道題中有個(gè)固定短語be concerned about,題目中用concerned,就是用形容詞做狀語.
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