—Where are Lucy and Lily? —Oh , the two
问题:
—Where are Lucy and Lily?
—Oh , the two girls must _______ a game in the garden now.
A.play
B.are playing
C.played
D.be playing
—Where are Lucy and Lily?
—Oh , the two girls must _______ a game in the garden now.
A.play
B.are playing
C.played
D.be playing