Look before you leap! You have to ______the costs of the new system against the benefits it will bring.
It was raining heavily, Little Mary felt cold, so she stood _____ to her mother.
---Your suit! Why? ---I got stuck in the rain.
When I took his temperature, I found it was two degrees above .
I toured the Great Wall,I was deeply impressed with the beautiful scenery.
Can you believe neither Amy nor Helen from English-speaking countries though they speak English so well?