Question

It is very (use) to read English in the morning（用所给词的适当形式填空）

All the children sat （quiet），without a word.

Answer 1

useful,quietly.
第一个是固定句型 It is adj to do sth for sb.
第二个是修饰前面的动词,所以要填副词形式。

Answer 2

It is very useful to read English in the morning.
早上读英语十分有用处。

All the children sat quietly. without a word.
孩子们都安静地坐着，鸦雀无声

追问

an interesting film
还是a interesting film

追答

an interesting film

首字母发音为a,e,i,o,u的为元音字母，a要变形为an

Answer 3

1. useful
2.quietly