Sentence transformation
1. His parents disapprove of him studying law at the college. (disapprove of sth)
2. George used to be energetic. (used to =đã từng)
3.  If she hadn't broken the promise, he wouldn't have been disappointed. (Conditional 3 - used for unreal past - if had V3, would have V3)
Wordform
1. Most of the children in her class are mentally retarded [passive (am/is/are + V3)]
2. A person who is more beautiful in photographs is said to be photogenic. (adj for photograph)
3. The Vang Trang Khuyet Club's members are exhibiting their photographs for the first time in Hanoi (present continuous; am/is/are + V-ing)
Tenses
The students are playing badminton. (at the moment → present continuous)
@roseanneparkblink

1. His parents disapprove of his studying law at college

-> disapprove of N/Ving

2. George used to be more energetic than he is now

-> used to Vnt

3. If she hadn't broken the promise, he wouldn't have been disappointed 

-> If S had VPII, S would have VPII

---

1. retarded : ngốc nghếch

2. photogenic : ăn ảnh

3. exhibiting : trưng bày

---

1. are playing

-> thì HTTD: S am/are/is Ving