1) How many days have you read this book? 2) Only when she was on the train, she remembered that she had left the book at home. 3) They live in this house for five years. 4) My sister was sick for several days, when I found out about it. 5) Did you know that he did not write an essay?6) We do not get letters from her for several months. 7) How many years have you work at this plant? 8) He was already gone when Allen turned on the radio. 9) I've been working on this problem for three months. .10) You need to rest. You work too hard today.