---Excuse me. You shouldn’t smoke here. Look at the sign “NO SMOKING HERE”.--Sorry, I ________ it just now.
#101564
A
doesn’t see
B
haven’t seen
C
didn’t see
D
hadn’t seen
推荐题目
 It’s been years since I _____ myself so much.
#103535
A
enjoy
B
enjoyed
C
have enjoyed
D
had enjoyed
. One of the skaters talented enough to stop her is Asada, who _____ against her since they were junior skaters. 
#103813
A
would compete
B
is competing
C
has been competing
D
is being competed
Wang Pin is an advanced worker in our company. He _______ for four years in Yangzhou University.
#103542
A
studied
B
has studied
C
had studied
D
has been studying