1. Maria taught the children to sing lively songs and perform short funny plays
    to _________ them _________ (使……高兴起来).
2. I'm looking forward to _________ _________ (收到……的来信) you.
3. He is always _________ _________ (对……满意) everything in life.
4. I am a new student, but I can _________ (相处) well with all my classmates. They all like me.
5. The students are _________ their _________ (尽力) to make the plan perfect.