1. The moon (goes) around the Earth.
2. In Africa (it is) very hot.
3. Teenagers like to talk about (love).
4. In Canada people wear thick clothes in winter (to keep) themselves warm.
5. In my fridge there isn’t (any) food.
6. Last summer (it rained) every day.
7. My friend gave me (good) advice.
8. This year (the best) student in our class is going to England.
9. In our town very (few) people have cars.
10. There is (little) hope for homeless people in most countries.
11 Mathematics ( is) one of my favourite subjects .
12. We think that students (who) miss school are foolish.
13. We all depend ( on) each other.
14. There aren’t (any) members of parliament who didn’t ( take part) in that charity event.
15. Sandra insisted (in ) applying to Oxford.
16. What could prevent him (from) calling us?
17. My friend is very fond (of) reading.
18. Jane is proud (of) getting a place at Edinburgh University.
19. Grandmothers always look forward (to) hearing from their grandchildren.
20. I am glad you succeeded (in) solving this problem.
21. Teachers are responsible (for) making us work harder.
22. All the students in my class are interested ( in) getting a higher education.
23. I know Jack, he will object ( to) studying on Sunday.
24. She thanked him (for) coming.
25. What is the weather (like) today?
Khan Academy is a non-profit educational organization. It has been created by Sal Khan. Khan Academy is available on the internet for free. Khan Academy teaches by using YouTube videos of short lectures of certain topics, as well as by using practice exercises and tools that help with learning. It is available in many different languages, but mostly English.
Khan Academy teaches mostly about mathematics, but also teaches biology, chemistry, physics, history, astronomy, cosmology, American civics, art history, economics, music, computer programming and computer science, healthcare, medicine, and finance. In the YouTube videos that Khan Academy makes, they record diagrams being drawn from a tablet using the screen capture software called Camtasia Studio.