—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
推荐题目
_____ when the light went on last night?
#37783
A
What were you doing
B
What have you done
C
What did you do
D
How were you doing
Sally took a photo of her friends while they _________ computer games.
#39111
A
play
B
are playing
C
have played
D
were playing
---- I’m sorry .I _____ your printer for such a long time.---- Never mind.
#38617
A
have borrowed
B
have lent
C
have kept
D
have bought