Tell him the truth at once，or he will be angry．（改为主从复合句）
don't tell him the truth at once，he will be angry．
By the time I joined Greener Group，they （义务打扫图书室） for 2 years．（volunteer）
﹣Is Molly a talented girl？
﹣Yes．She can draw and sing．And she （擅长跳舞）too．（be）
proud/kept out/set up/attend/help/thirsty
71．The teacher can see in our eyes that we are for knowledge．She tells us that knowledge will give us wings to fly．
72．Jessica Wong sells her bags in a small shop，but she has also an online business to sell them．
73．Our teachers and parents will be of us because we have grown up and can be responsible for ourselves．
74．Although you may not like to do chores．You should your parents around the house．
75．We will the junior high graduation ceremony tomorrow．It is a very special time for us．
The students are supposed to keep quiet before the papers ．（hand）
分发试卷前，学生们应该保持安静．
The accident and we will do our best to help him．（take）
这个事故已经发生了，我们将尽力帮助他．