— When _________ you________ your teeth,
题型:选择题
问题:
— When _________ you________ your teeth, Billy?
—Just now.
A.do; brush
B.have; brushed
C.did; brush
D.was: brushing
— When _________ you________ your teeth, Billy?
—Just now.
A.do; brush
B.have; brushed
C.did; brush
D.was: brushing