_______ a post office, I stopped _______ some stamps. 
#97445
A
Passed, buying
B
Passing, to buy 
C
Having passed, buy
D
Pass, to buy
推荐题目
The teacher came into the classroom _______ by his students. 
#97444
A
following
B
to be following
C
followed
D
having followed.
His first book ___________ next months is based on a true story.
#93027
A
published
B
to be published
C
to published
D
being published
We still remember once _________ round the famous tower when we were young.
#90730
A
having taken
B
to be taken
C
having been taken
D
to have taken
I like getting up very early in summer. The morning air is good _______.
#92001
A
to be breathed
B
being breathed
C
breathing
D
to breathe