问题补充：
Shall we the Palace Museum next week?
A. go on a trip
B. go a trip to
C. go on a trip to
D. go on a trip of
答案：
A. go on a trip
B. go a trip to
(答案→)C. go on a trip to
D. go on a trip of
解析：考查提建议的用法。Shall we+动词原形，“让我们做......怎样？”，“去某地游玩”是go on a trip to sp.句意“让我们下周去故宫怎样？”故选C。
