问题:
【题文】 Mario used to _____________ in the morning.
A.practiceswimming
B.practicingswimming
C.practiceswim
D.practicesswimming
【题文】 Mario used to _____________ in the morning.
A.practiceswimming | B.practicingswimming |
C.practiceswim | D.practicesswimming |
参考答案: