Circle the underlined part that is incorrect in each of the following sentences. Then correct it.
1. My grandfather has gone to hospital last month. He is fine now.
A B C
2. Life expectancy has been very low in the past. Now it is higher.
A B C
3. My father used to do a lot of exercise since he was young.
A B C
4. I was ill last week, and didn't do much exercise so far this week.
A B C
1: A
Sửa lại: Went
2: A
Sửa lại: was
3: C
Sửa lại: when
4: B
Sửa lại: have not done