Is this park______you’ve visited recently? — Yes, it’s the most beautiful one I’ve ever visited before.
________ have you become so good at English this term ?—By studying grammar and reading English novels.
Jack _______ swim when he was five years old.
Spring is a good season _____ hiking. [ ]
Can you tell me Kitty’s address.-I don’t know, either. But I’ll tell you her address when she ______ to me.