____ they ____ a cow yesterday?
#39339
A
Did; milked
B
Did; milk
C
Do; milked
D
Do; milk
推荐题目
—Who        her father?—He must        by that policeman.
#36943
A
saved; be saved
B
saved; save
C
is saved; be saved
D
save; be save
---What’s your sister doing now?--- She ______ her homework.
#39656
A
does
B
will do
C
is doing
D
was doing
By the time I got to the cinema,the movie _______ for ten minutes.
#42286
A
had begun
B
had been on
C
has started
D
has been on