写出下列动词的第三人称单数,现在分词及过去式

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  • 1.try ( tries )( trying )( tried )

    2.push( pushes )( pushing )( pushed)

    3.enter( enters )( entering )( entered)

    4.play(plays )(playing )( played )

    5.sing(sings)( singing )( sang )

    6.sell( sells )( selling )( sold )

    7.spend(spends)(spending )(spent )

    8.speak(speaks)( speaking )(spoke )

    9.fly( flies )(flying )( flew )

    10.ride(rides)( riding )( rode )

    11.die( dies)( dying )( died )

    12.cry( cries )( crying )(cried )

    13.pick(picks )(picking )(picked )

    14.count(counts )(counting )(counted )

    15.buy(buys )(buying )( bought )

    16.cost( costs )(costing )( cost )

    17.swim(swims )(swimming )(swam )

    18.say(says )(saying )(said )

    19.stand( stands )(standing )( stood )