`58.` D. His heart was so weak that he couldn't walk very far.
- Cấu trúc so..that
- S + be + so + adj + that + S + V
`59.` B. It's time your children left here.
- Quá khứ giả định
- It's time + S + V-ed/V2
`60.` A. It is such a long way to Lan's house that her friends can't walk there.
- Cấu trúc such ... that
- S + V + such + (a/an) + adj + N + that + S + V
