как перевести нарусский \\sparky\\

Дана символьная строка всюду букву А поменять на букву В

какая часть речи укажите через терэ--
тройка, тройной, втроём,три, утроить, трижды, трое , треугольник 

1.USE PAST PERFECT CONTINUOUS TO COMPLETE THE SENTENCES. .1Her eyes were red .It was clear she (cry).2.Mrs Thompson (wait) for 3 guartdrs of an hour defore hue secretary came.3.JANE was tired.She (do) her room since afternoon.4.Alec said he (stand) there since 6 o'clock.5 jill (study) english for five years defore she visited the USA .5.it was late at night when he realized that he (work) with computer for 5 hours.

как поставить вопрос к предложениям по английскому языку. He wants to go to the zoo.They like to sledge in the park.We heve got many fine toys.She works at the stadium.I like to go to the skating rink.