問題詳情:
Check your answers carefully and make some changes ____.
A. if it necessary B. if you are necessary C. if is necessary D. if necessary
【回答】
D知識點:固定句型
題型:選擇題
問題詳情:
Check your answers carefully and make some changes ____.
A. if it necessary B. if you are necessary C. if is necessary D. if necessary
【回答】
D知識點:固定句型
題型:選擇題