Sir, we have failed to work out this problem. What is exactly the right way?— Look. Only in this way ________ , but you boys _____ a wrong way.

Granny seems ill. Are you sure it’s _______

下列句子的句式不同于其它三项的是（ ）

Only when __________ senior high school __________ toshow a great interest in poems

We ________ for over 2 hours. Are you sure this is the right way