Did you remember (post) the letter? I'm very sorry for (be) late. He decided (put) his coat on the hanger

1. Did you remember (post) the letter? Are you sure you've posted it?
2. I'm very sorry for (be) late
3. He decided (put) his coat on the hanger.
4. He was planning (take) a holiday in the USA.
5. I like (watch) the clouds at sunset.
6. I am looking forward to (see) the film again
7. I intend (study) English to understand American business methods.
8. He refused (betray) his friends.