When parents come to visit our school last week, Tom _______ them into the classroom.

下列句子中，句式与其他三项不同的一项是（ ）

_________ the same mistake again made his teacher very angry.

The media can often help solve problems and draw attention﹍﹍situations﹍﹍help is needed.

Let’s go for a walk,shall we?— It’s too late now; ________,it’s beginning to rain[ ]