【单选题】The mother was afraid to let the boy ______ the tree.
【单选题】What can we learn about the dialogue?
A.
The mother was not a good cook.
B.
The boy doesn't like MacDonald.
C.
They sometimes go out for dinner.
【单选题】The mother was nervous because she had not her son who was away at a boarding school.
【单选题】In the car accident the mother was killed, but her two-year-old son was found_____.
【简答题】The mother was so sad that she didn't want to say anything.(否定句) The mother was _____ sad _____ say anything.
【多选题】建筑电气工程图中,用于电路的通常表达方法有( )。