It is （）to teach a kid the way to solve a problem than tell him the solution directly.

Mary （）on shoes when she （）them.

A.tries；buys
B.tries；buies
C.trys；buys
D.trys；buies

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I’m very pleased to tell you that we would be able to supply you （）the models you asked for.

A.with
B.in spite of
C.to
D.by way of

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