Fill in the blanks with the correct infinitives.
1. Deva forgot ______ the letter.
2. The doctor advised the patient ______ his medicines without fail.
3. Rajesh went to the airport ______ his friend.
4. The bear climbed up the tree ______ the honey.
5. The boys went to the forest ______ birds.
6. tried hard ______ both ends meet.
7. The archaeologists are trying ______ the ruins of Keelady.
8. Solar energy is used ______ electricity.
9. ______ concession, you have to apply well in advance.
10. We have plans ______ to London during summer vacation.
