1It's important for us to help her overcome this situation. We need to use her savings to buy.

2 Thanh spent her savings to buy.

3It's very interesting to take part in our organization. -> Taking part in our organization is very interesting.

4They don't need to move out of the big villa last week. -> It's our organization's big villa last week.

5 It takes Nam six years to tell me the truth. -> Nam told me the truth after six years.

6 She'd rather cook for me than go out. -> She prefers to cook for me than go out.

7Having a cup of tea in the morning is wonderful. -> It's wonderful to have a cup of tea in the morning.

8 It's necessary for Tom to commute to the office every day. -> Tom needs to commute to the office every day.