—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
In ten years, John __________ an astronaut.
#42217
A
will be
B
is
C
was
D
be
I became a teacher ten years ______. I have been a teacher _______ 2008.
#37534
A
ago; for
B
before; since
C
ago; since
D
ago; in