Question 1: This app allows you to review lessons by playing games

Question 2: We were cleaning up the beach when it started to rain / raining. 

Question 3: Ecotourism provides tourists with opportunities to explore nature.

project will be on the theme of green environment: I will plant many trees in remote areas, collect trash and clean up polluted places such as the sea or a campaign to clean up trash along rivers, shores or roadsides.

The time arrangement is quite reasonable, stable and perfect for a long day. It is worth continuing to develop as above and should study your schedule.

I'm ........ Are you the company called : ....... that product camera? I have a litte issue about your camera : Last week, I went to the store and bought a new camera which is made by your company. I like it very much. But this morning, when I'm going to take a picture of a flower, I realize that it isn't working any more. I checked it again and it's still not working. I didn't do anything like drop it to the ground since I bought it. I think there's some problem inside it. I'm really worry about the camera. What do you think the problem is? Can you come to my house and check the camera? I'm free tomorrow. If you can, please come by. Here's my address : ........... Thank you