_____ Lily _____ Lucy may go with you because one of them must stay at home.
I don’t know ______ he will be back ______ the Dragon Boat Festival.
---Have they finished ________ the Water Festival? ---No, they haven’t.
---Excuse me. Do you know these English words? ---Sorry, I don’t. But you can __________ in a dictionary.
_______ nice day! Let’s go out to have a picnic.
Remember, my dear son. ________ careful you are, ________ mistakes you will make.