I hear the birds _______.
#51349
A
sing
B
to sing
C
sings
D
singing
推荐题目
He is afraid of ________ English in public.
#49891
A
speak
B
speaking
C
spoken
D
speaks
My funny joke made my grandparents ___ happy.
#51058
A
feel
B
to feel
C
feeling
D
is feeling
—You forgot______ off the lights?   It’s still on.—But I remember _______them off before I went out of the room.
#49390
A
turning; to turn
B
to turn; turning
C
turning ; turning
D
to turn; to turn