It was very lucky to see the "Monster of Lake Tianchi", ______ we didn't see it clearly.

Why were you upset? The headteacher wasn’t blaming anyone. He         said things like that could be avoided. 

I could hardly tell the twins apart because their appearances are only ____ different.

In the good care of the nurses, the patient is ____recovering from the heart operation

We should’t only be satisfied with the present life, We are trying to look ______ and see what our future will be like.