问题
选择题
The girl in black trousers _____often noticed ______the teachers’ office.
A．are; entering into
B．are; entering
C．is; to enter into
D．is; to enter
答案
答案：D
题目分析：句意：穿黑色裤子的那个女孩被经常注意到进入老师的办公室。一般现在时的被动语态be done ji结构，be noticed to do,enter sw表示进入某地。根据句意，故选D。