I have to look after____and ____sister today.
Tony is ______ lazy, and he is not good at learning English.
—What is he doing now?—He’s ________ the teacher in class now.
The trees in the school are good for our health. So please don’t ________.
We are so tired(累) these days because we have ________ homework .
—Why do you like dogs?—________ they are very friendly.