Complete the following sentences.
1. Let me congratulate you on …………………………………………………………
2. It’s very kind of ……………………………………………………………………
3. We went out for a walk though ……………………………………………………
4. Tet is a festival which ………………………………………………………………
5. Is that the teacher whom ………………………………………………………….
6. The man who ………………………………………………………………………