around Tian’anmen Square, the tourists were taken to visit the Palace Museum. 
#98195
A
Showing
B
Having shown
C
Being shown
D
Having been shown
推荐题目
You can’t imagine what great trouble they have _________ the problem_______.
#95579
A
to solve; being talked about
B
solving; discussing
C
to solve; to talk about
D
solving; being discussed
--- Shall we call on Frank tonight?---We’d better not. He is said ________ a lecture.
#97302
A
preparing
B
to be preparing
C
to have prepared
D
having prepared