【評論主題】Learning to operate computers _________ very important today.(A)being         (B)are          (C)wer

【評論內容】Ving 做主詞用,之後須接單數動詞,Ving+單數動詞 ex.Playi.....看完整詳解

【評論主題】Learning to operate computers _________ very important today.(A)being         (B)are          (C)wer

【評論內容】Ving 做主詞用,之後須接單數動詞,Ving+單數動詞 ex.Playing cards with friends is entertaining.