1. He speaks too quickly for me to understand. (enough)
2. It’s a pity the weather isn’t better today. ( If only)
3. The last time we visited Kuala Lumpur was two years ago. (since)
4. Minh last wrote to his pen pal five months ago. (for)
5. They usually wore jeans when they were young. (used)
6. The woman was very friendly.She served us dinner. (Relative pronoun)
7. The boy’s wallet was stolen. He called the police. (Relative pronoun)
8. My father was very pleased. I passed the entrance exam with high points. (Adjective+ that clause)
9. Learning English is easy. (It is)
10. Nga is a good English speaker. (adverb)
11. I suggest collecting unused clothes. (Let’s)
12. It was raining, so we decided to postpone our camping. (since)
13. She wants them to sing a song. (suggest)
14. She couldn’t join us because she was busy. (so)
15. Shall we go to the cinema tonight? (what about)