–How come ___________?—I had to look after my sick brother.
— What can we learn from Lei Feng? — We should not only think about , we should think about others as well.
It’s a good habit to turn off the unnecessary lights, it can help save .
In the United States, Father's Day falls on ________ third Sunday in ________ June.
-Could you tell me this summer holiday?-Tibet.
-Your watch looks new. How long have you it? -For about one year.