单选题 She is often heard ______ French aloud in the morning.
  • A. to read
  • B. read
  • C. to have read
  • D. to be reading
【正确答案】 A
【答案解析】make，let，have，see，hear，watch，notice，feel等动词后的不定式不带to，但如果用于被动语态时，to不能省略。