The last time I saw my uncle was two years ago. (for)
→ I haven't seen my uncle for two years.

Let me reach my office and then I will talk to him. (when)
→ I will talk to him when I reach my office.

Why don’t we donate our old books, toys and clothes to charity? (suggests)
→ Mom suggests that we donate our old books, toys, and clothes to charity.

Jane stayed behind after the class in order to talk to the teacher. (because)
→ Jane stayed behind after the class because she wanted to talk to the teacher.

This is the first time they’ve been to Korea. (before)
→ They’ve never been to Korea before.

How long have you been a member of Volunteers In Asia? (join)
→ When did you join Volunteers In Asia?

We suggested people recycle glass, cans and paper. (encouraged)
→ We encouraged people to recycle glass, cans, and paper.