what do you think to happen there yesterday 中"TO"为什么Y要加?

What do you think happened to they? What do you think You think you can tell me what to do? _____ to improve our English?A What do you think we should do B Do you think what do we should C What do you think should we D Do you think what should we do 选哪个理由 翻译：what do you think would happen to the Wilsons what do you think work can provide to us? What do you think about Cindy according to the passage? What do you think of his t________ to school. What do you think of his t___ to school 请问What do you think happened to they? Why do you want to join Cargill?What do you think you can contribute to Cargill? What do you think of what do you think about what do you think of what do yu think you What do you think about what do you think i what do you think you do?