I _____ to help you to do homework but I couldn’t spare any time. I _____ a composition last night and I’ll finish it today.
— Shall I go and buy two more bottles of beer? — No, I’ve already bought twenty. That _____ be enough for us two.
No matter how frequently __________, the works of Beethoven still attract people all over the world.
—What will you be doing at 4:00 tomorrow afternoon? —I _____ in my office.
The school _______ he once studied in is famous.
—Really ? Who will give ____lecture ? What is it about ? —Professor Chen , ____president of Beijing University . About pollution .