They have been doing morning exercises they up.
#40137
A
since, got
B
for, get
C
since, get
D
for, got
推荐题目
—David, are you listening to me?—Sorry, Dad. I ________ to make sense of what the reporter said.
#63706
A
was trying
B
have tried
C
am trying
D
tried
What at that time ? ---Playing football.
#39891
A
did you do
B
do you do
C
were you doing
D
are you doing
While my mother________ some washing, I was making a kite for Mary.
#40261
A
did
B
was doing
C
is doing
D
does