---What does your mother do to keep fit,
题型:选择题
问题:
---What does your mother do to keep fit, Tom? ---She usually ______ after supper.
A.walk
B.walks
C.is walking
D.to walk
---What does your mother do to keep fit, Tom? ---She usually ______ after supper.
A.walk
B.walks
C.is walking
D.to walk