Must I return the hook tomorrowmorning —No, you _ .You can keep it longer.

If I ______ about this computer program, a hage amount of time and energy would have been saved.

Life is full of opportunities for you.—That’s right. _____ .

Yesterday, I met my old friend ________, which gave me a big surprise

They_______ in our school. They are in No.2 Middle School.