math, I think it’s too difficult.A、To B、As C、For
- Peter, do you know who _______ my dictionary?- Sorry, I don't know. I _______ it.
- It's raining heavily outside.- _______, I will go back home because my son has been left alone at home.
- What will you do when you are lost in a strange city?- I won't _______ that. Look! I have downloaded the map on my iphone.
- Air quality in our city is becoming worse and worse. - Yes. These days' PM2.5 readings are frightening. We must do something to _______ air pollution.
- Why did he make no _______ to be understood or liked?- He didn't care what others think of him.