单选题 The homework is clue the first thing Monday morning, so make sure ______to the deadline (最后期限).
  • [A] keeping
  • [B] you'll keep
  • [C] for keeping
  • [D] you keep


【正确答案】 D
【答案解析】make sure确保某事发生，后面接of sth．或that从句，从句一般用现在时。