I think ____ the poor children is our dutyA.helping B.help C.helps D.helped选什么啊,最好讲明原因

poo poo I think the book is very good.____ ____ ____,the book is very good I think the man over there may be ____(help)..... I think it's important to keep the room clean.I think ____ ____ to keep the room clean. I don't think he is at home ____ ____ ____(现在)-.- the or this? The water ___cool when I jumped into the poo for morning exercise .为什么填felt而不填is felt I think diving is the most difficult activity of all .(同义句) I think diving is ____ ____ ____I think diving is the most difficult activity of all .(同义句)I think diving is ____ ____ ____of _____ _____ _____ . I think ____ of the material I listened to at the beginning of the exam ____ easy . I think English is more difficult than the other subjects.（改为同义句）I don't think the other subjects are ____ ____ ____ English. i think the plan put forward by Tina deserves serious consideration.i think the plan put forward by Tina deserves ___ ____ ____ ____. I think he will go to the zoo tomorrow,____ ____?反义疑问句 The sky___(be)black.I think it ___ ___ ____ ____(rain) The story isn't interesting,I think .(同义句转换) I _____ think the story ____ _____ Which do you think is the first ____ in the world?----Computer,I think Amost uesful B useful The shop is too crowded.I think so.Let's ____.-----The shop is too crowded.-----I think so.Let's ____(get out/get out of). I think the book_ 英语翻译I think ____ ____ of him ____ you do.