look at the people （ ）games on the playground.括号里用are playing 还是playing,为什么呢?

Look at this people walking on the beach.纠错 Look at the group of people playing basketball. Some people,some things,I just look at the heart. look at the people playing basketball中可不可以改成look at the people who are playing basketball the store wants to know how many people look at the things in the man at the store.翻译 Look At The Sky look at the boy. look at the Look at the picture Look at the 造句 look at the look at the chart look out at the look at the beach Look at the blackboard look at the Look at the look at the ( ),please