BOB was having trouble getting to sleep. So he decided to go and see a doctor.

Bob's doctor gave him some strong sleeping pills (安眠药).

Bob took the pills that Sunday. He had a good night's sleep and got up early.

When Bob got into work, he went to see his manager. "I didn't have any trouble getting up this morning," he said, smiling.

"That's good," said the manager. "But where were you on Monday and Tuesday?"