---How much money does the package cost?---It cost 20 yuan , including two CD-ROMs and a guidebook.
Children often go to the zoo ___ the morning ___ June 1.
Can I borrow some books _____ you?
—What do you do _____ the Dragon Boat Festival?—We usually have a dragon boat race and have some rice dumplings.
—_____ are in the same class. —Yes, ____ should help each other.
It takes ____ forty minutes _____ this English class.