Did youunderstand what the teacher said —Yes! She explained the text in detail to make herlessons __________.

He’s one of those early birds. It’s __________ of him to get up early.

the water was cold , Wei Qinggang jumpedinto it to save others.

We shouldn’t ____________ the trees any more. Instead, we should plant more trees.— I cannot agree more.

She locked her room _____ a thief would break into it