It\'s your turn to be on duty这个句子中的动词不定式起什么作用?这个句子中的动词不定式是作状语、主语、还是其他的成分?

it's good of you to ______ at buying your ticketsA make your turn B take your turn Cdo your turn D have your turn如何选? It's your turn to read books. It's your turn. it's rude to _____ your fingers to people.a.point b.turn c.put now it's your turn to speak 如何翻译 It's your turn to clean the blackboard.（汉译英） It's your turn to do sth.分析句子结构 It's your turn to read the text aloud. It's your turn to cIean the cIassroom. it's your turn nom. __(which/to whom/whom/whose) turn is it? it's your turn. 填空：___tnrn is it?It's your turn.A.Which B.To whom C.Whom D.Whose It's your turn和your turn有没有区别 ________ahead.It's on your right.A.Turn around B.Go straight C.Turn right When you wait foa bus ,it's polite to wait for < > turn .A.your B.his C.you D.yours Tom,it's your turn( )a story for us.A tell B to tell C telling D told 请翻译：It’s your turn to turn the apples turning red at the turn by turns. 【急】Now it's your turn to turn left at the first light.两个turn分别指什么意思?