You _______ write the poem down. Our teacher will give us a copy. 

— I phoned you yesterday morning. A girl answered, but I didn’t recognize the voice.— Oh, it ____ my younger sister. She was in my room at that moment.

The first question was difficult, but the rest were pretty easy.

----Shall I go and buy two more bottles of beer? ----No, I’ve already bought them yesterday. That           be enough for us two.

I'm going to Europe on vacation together with John if I ________ find the money.(2012·全国Ⅱ)