We can’t go on a picnic because the weather is not fine

13-We can’t go on a picnic because the weather is not fine.  

-> If the weather

14-If I don’t live in a big city,I can’t go to the supermarket very often.   

-> Unless........................

15-I can’t buy a computer if I don’t have money.   ->Unless........................................................

16.You can get high marks if you are not lazy.

->Unless …………………………………………………………….

17.We ‘ll go camping if the weather is not good.

->Unless………………………………………………………………..

18.If she is lazy,she will not pass the exam.

->Unless……………………………………….

19.If Nam doesn’t speak English everyday, he will easily forget how to use it.
=> Unless ……………………………………………………………….
Giúp mik vs ạ