—Mom,whywillyoubuyanotherdesk?Wehavehadone.—Oh,God!Ifor...

問題詳情：

— Mom, why will you buy another desk? We have had one.

— Oh, God! I forgot _____ one last month.

A. buying   B. to buy C. selling D. to sell

【回答】

A

知識點：動詞和動詞短語

題型：選擇題