it takes tom half an hour
it[]Tomhalfanhour[]there.A.take;towalkB.takes;walkingC.took;towalkD.istaking;towalk...
it [ ] Tom half an hour [ ] there.
A.take;to walk
B.takes;walking
C.took;to walk
D.is taking;to walk 展开
A.take;to walk
B.takes;walking
C.took;to walk
D.is taking;to walk 展开
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