Wemayfindthatlearningaforeignlanguagedoesnothavetobe

問題詳情：

We may find that learning a foreign language does not have to be _______ learning our mother tongue, but can in fact be as easy.

A. twice harder as B. as twice hard as C. twice as hard as D. as twice hard

【回答】

C

知識點：語法填空

題型：選擇題