问题
—Where is Tom?— I last saw him _____ in the library, reading[ ]
A: be sitting
B: sat
C: seated
D: seating
B: sat
C: seated
D: seating
正确答案是：
同类题型
Not until liberation _ he __free.
It’s reported that in the past 50 years around 80 percent of Beijing’s courtyard houses ______.
Is the young woman playing the violin —________
He was __ with the results of the exam, which can be seen from his __ smile.
The purpose of new technologies is to make life easier, _______ it more difficult. [ ]