—What were you doing when the UFO arrived?— I         with my dog on the street.
#41593
A
walked
B
was walking
C
is walking
D
have walked
推荐题目
Sally took a photo of her friends while they_____computer games.
#37066
A
play
B
are playing
C
have played
D
were playing
While the boy ______ down the street, the UFO _____ . 
#41890
A
was walking; was landing
B
walked; landed
C
was walking; landed
D
walked; was landing
Mr. Smith won’t go to work if he _________this afternoon.
#37451
A
won’t feel good
B
will feel good
C
doesn’t feel well
D
feels well