Complete the sentences by using gerund of infinitive forms of the given verbs.
1. Don't worry! I don't mind ....... at night until the early morning. (study)
2. It's a very important project for me. I'd like ......... (finish) it until this weekend.
3. My grandfather and I enjoyed .......... (spend) time together near the lake in the good old days.
4. The economists advise people. .......... (invest) their money on gold from now on.
5: Jane is crazy about ......... (keep) pets at home, but-her father doesn't allow her.
6. The headmaster expects all teachers ........ (join) the first-aid course this term,
7. My son is gifted in .......... (solve) maths questions. He can find the results in a very short time.​