【题目】There is a piece of board at the gate of the construction site near Zhengfa Temple, which reads: without permission.
A. Keep out B. Keep away
C. Keep off D. Keep up
在线课程【答案】A
【解析】A. Keep out留在外面，留下；B. Keep away（使） 不接近，（使） 缺席；
C. Keep off（使） 不接近，禁食；D. Keep up保持，不减弱，持续不变。句意：正法寺附近施工现场门口有一块板子，上面写着：未经许可不得入内。根据句意可知选A。