1. The collection of stamps made him become famous in the country. (collect -> collection)
2. Let us practice listening to English programs on the radio. (in -> on)
3. What about playing tennis instead of going to the cinema? (play -> playing)
4. Do not turn on the TV, please. I am too tired to watch. (Don -> Do, so tired to watch -> too tired to watch)
5. They turn on the radio to listen to some news. (turn in -> turn on)

1: collect - collection

−- Sau mạo từ là danh từ 

⇒ Cần điền dạng danh từ của collect , vì vậy điền collection ( n ) : bộ sưu tầm
2: practising − practise

−- Let's + V nguyên mẫu ; Hãy làm gì đi

3: play −- playing

−-What about + V-ing
4: to →→ too

−- S + be + too + adj + ( for sb ) + to V

5: in −- on

−- Cụm từ turn on sth : bật cái gì lên 

1)collect→collection

2)in→on

3)play→playing

4)to watch→of watching