对括号里的提问

问题描述:

对括号里的提问
1.The students in Class 1,Grade 7 will go on a trip to Beijing (by train)
_____ _______the students in Class 1,Grade 7 will go on a trip to Beijing
2.The children usually knock on (their neighbours'doors at Halloween.)
_____ _______do the children usually knock _______at Halloween?

1.How will
2.Whose door,on