王叔叔英语短文阅读题

王叔叔英语短文阅读题
Uncle Wang works in a book shop in the middle of thecity. The shop is not far from his home. It is aboutonekilometre away. So Uncle Wang seldom(很少)goes to work by bus.He usually goes there by bike, sometimes on foot.It takes (花费) him twenty minutes to get there by bike and forty minutes on foot. Today his bike is broken. He wants to walk there. Now he is having breakfast. He leaves home at ten minutes to eight and he walks to work twenty minutes earlier. His work starts at half past eight in the morning and finishes at a quarter to five in the afternoon.
4. What time does he usually leave home by bike?
A. At ten minutes to eight
B. At half past eight
C. At ten minutes past eight
D. At twenty minutes past eight
5. He usually gets back home from work at ( ) in the afternoon.
A. 4:45B. 5:15 C. 4:55 D. 5:05
答案是CD
为什么 请解释