In 1720,Bach’s wife suddenly died, ______him with four children．

—What did you do when you saw the girl     in the flood? —I did what I could     .

          good and sweet, this kind of pear was soon sold out in the market.

He is considering________English，because he thinks it of no use.

“If,” he added at the meeting, “________ enough time, we would certainly have done it better.”