—Why was he fined?—He happened to_______ flowers in the park.
问题描述：
—Why was he fined?—He happened to_______ flowers in the park.
A．catch picking B．be caught to pick C．be caughtpick D．be caught picking
When ____,the museum will be open to the public next year.
Acompleted
Bcompleting
Cbeing completed
Dto be completed
答
他为什么被罚款了
因为他正好被抓到在公园里摘花
被抓到做某事,用be caught doing,所以选D