1. Is correct. You can also say: " Is the weather improving." Improving means the same as "getting better." 2. " I have a new idea for this project." 3. Correct 4. Correct, but you may want to phrase it a bit differently. " Pollution is quickly increasing." "Pollution is.quickly worsening." 5. " The sun is rising right now." 6. The leaves are starting to fall now that Fall has arrived." This one can be tricky because the time of year, or season, is called Fall. Fall is the season where the leaves begin to fall. 7. "Quickly" and " very fast" mean the same thing in most cases so you need to decide which sounds better for that sentence. 8. Is similar to 7. You can also say that 9. " My English is improving." 10. You can use " new and interesting" if you want. Or You can also use " improve" instead of getting better. " my English skills are beginning to improve." Use this phrase if you are getting better at something. If something is new to you, say that you are learning something new. 11. Do not use " starting improving" Use " starting to improve." "I am just starting to understand the rules now. "

A lot of these sentences really depend on context, so it could change a little depending on that: 1. Is the weather getting any better? 2. I am changing the idea of the project. 3. Social networks are becoming very popular. 4. Pollution is increasing very quickly. 5. The Sun is rising right now. 6. During this period the leaves start falling down. 7. Tom is growing up very fast. ( Both could work but fast sounds more natural in context) 8. My sunflowers are growing quickly. 9. I am improving my spoken English. 10. I am beginning to learn something more/new. (I wouldn't add any of those two unless you change the sentence) 11. I am starting/ beginning to understand the rules just now. (Can I say 'I am starting understanding'? No you can't say that)

✓1. Is the weather getting better? XX2. I am changing MY MIND about the project. ✓3. Social networks are becoming very popular. ✓4. Pollution is increasing very fast. XX5. THE sun is rising right now. XX6. In this period(,) leaves are falling down. ✓7. Tom is growing very fast. (Is it better to use 'very fast' or 'quickly'?) Both are fine. ✓8. My sunflowers are growing quickly. XX9. I am improving my English. [speaking]<--(not needed) ✓10. I am beginning to learn something (new). (Can I say 'a little bit more'/'something interesting', as well?) 'something interesting' would be alright. ✓11. I am starting to understand the rules [just]<--(not really needed) now. (Can I say 'I am starting understanding'?) No. You need a 'to.'

Thanks!

A lot of these sentences really depend on context, so it could change a little depending on that! 1. Is the weather getting any better? 2. I am changing the idea of the project. 3. Social networks are becoming very popular. 4. Pollution is increasing very quickly. 5. The Sun is rising right now. 6. During this period the leaves start falling down. 7. Tom is growing up very fast. ( Both could work but fast sounds more natural in context) 8. My sunflowers are growing quickly. 9. I am improving my English speaking. 10. I am beginning to learn something more/new. (I wouldn't add any of those two unless you change the sentence) 11. I am starting/ beginning to understand the rules just now. (Can I say 'I am starting understanding'? No you can't say that)