______Bill is watching TV at home, but I’m not sure.

English idioms are difficult tounderstand—Exactly, ________ you know the meaning ofeach word

The manager demanded that the task______ within a week.

(2009年合肥市高三第一次教学质量检测)It was the training he had as a young man made him such a good engineer

Do you think you will fail in the math exam —_________. I am not good at it at all.