Question

My school organized a contest in which students singing songs to support of the street children.

It is a _______________________________________________________________ 
40.No one opened the door this morning.

The door _____________________________________________________________ 

Answer 1

My school organized a contest in which students singing songs to support of the street children.

It is a singing contest for students at my school to support of the street children.

(chữ of  ở đề bài cứ sao sao ấy em, có phải là in support of hoặc là support something không em nhỉ, em xem lại chút nhé!)

40.No one opened the door this morning.

The door was not opened this morning.