Certainly I posted your letter — I remember ______ it. 
#98425
A
posting
B
to post
C
to be posting
D
have posted
推荐题目
A great number of students ______ said they were forced to practise the piano.    
#94104
A
to question
B
to be questioned
C
questioned
D
questioning
 The deal, _______ next week, will allow Charney to make a great fortune in the stock market.
#88532
A
completed
B
being completed
C
to be completed
D
having been completed
Properly _______ with numbers, the books can be easily found.
#97433
A
marked 
B
mark  
C
to mark  
D
marking
The detective, ________ to read a newspaper, glanced at the man ________ next to a woman.
#94449
A
pretending; seat
B
pretending; seated
C
pretended; seat
D
pretended; seated