Look at this! It’s broken now! You ________ have been careful!

John, look at the time. ______ you play the piano at such a late hour ?

He suggested that we should _______ the instruction.

.Everyone in the building can hear Tom’s words:“Mother, the window _____.please come to help me.”

—— _______ the computer be repaired by him?—— No, I’d rather he _______ it repaired.