如果你不戴口罩，就不允许上公交车．
If you a mask， You will not be allowed to get on the bus．
他去过子胥湖很多次．
He to Zixu Lake many times．
李梅很勤奋，她习惯于晨读．
Li Mei is hard﹣working and she morning reading．
你们多久上一次劳动课？
do you have a label class？
Before asking someone for help， you'd better the right person for the problem．
在求助前，你最好弄清楚他是否是解决问题的合适人选．（find）
（have，last week）