Those children can take care () themselves now填上介词

Those children can take care ( of ) themselves now。那些孩子现在可以照顾自己了。take care of 表示“照顾,照料”。
You are busy on weekdays。How ( about )　weekends?工作日你很忙,那么周末怎么样?How about 或者what about 表示“。怎么样?”