Answer:
A good answer should contain the following:
Explanation:
15. Mona Lisa smiled mysteriously.
16. The three of us have planned on a picnic.
17. Both teams will play a good game.
18. I had expected to enjoy the beach.
19. We will be packing sandwiches for lunch.
20. Ron will have forgotten to feed the cat.
21. Anne had been staying home during her boyfriend’s trips.
22. The author will have been promoting her book.
23. Cardinals have been nesting in the shrubs.