【推荐1】

look     have a look       look at

1. —Is Jim happy?
—Yes. He ______ very happy.
2. _______! The boy is eating a big cake.
3. My mother ________ young, people always think she is my sister.
4. The teacher ________ me happily because I answer the right question.

【推荐3】

look at        look for          look after          look out     look out for

1. ______! There's a snake behind you.
2. —Where's your brother? I'm ______ him.
—Sorry, I don't know.
3. Please ______ the blackboard and read the new words together.
4. My parents are busy with work. I have to ______ my little sister at the weekend.
5. We should ______ cars and buses when we cross the road.