问题
选择题
______the room, a letter was seen lying on the desk.
A．Entering
B．Entered
C．After entering
D．When he entered
答案
答案：D
考查非谓语动词。题中a letter与前面的分句不是同一个主语，所以前面应加上适当的主语，故选D。
搜题请搜索小程序“爱下问搜题”
______the room, a letter was seen lying on the desk.
A．Entering
B．Entered
C．After entering
D．When he entered
答案：D
考查非谓语动词。题中a letter与前面的分句不是同一个主语，所以前面应加上适当的主语，故选D。