问答题
This extract has several punctuation mistakes. Find the mistakes and correct them.
【正确答案】The punctuation mistakes have been corrected here:
I am afraid that we have not been able to contact you by telephone. My secretary called throughout the day yesterday at haft-hourly intervals but was told that you were "not available". Please contact me personally as soon as possible because we need to check a number of details in your order.
You can reach me by telephone at any time this afternoon or tomorrow morning. Our office hours are 8.30 to 5. You can leave a message for me to call you back if necessary.
I am afraid that we have not been able to contact you by telephone. My secretary called throughout the day yesterday at haft-hourly intervals but was told that you were "not available". Please contact me personally as soon as possible because we need to check a number of details in your order.
You can reach me by telephone at any time this afternoon or tomorrow morning. Our office hours are 8.30 to 5. You can leave a message for me to call you back if necessary.
【答案解析】