Study hard and you will pass the exam.

 you will pass the exam,if you study hard 

14. If you stop taliking, you will understand lesson

18. you go to bed early if you are tired now

Should you travel to Ha Noi, please send Minh this book.

21/ have - will go
22/ is - will watch

21.have-will go

22.is - will watch

23/ won't go - is
24/ has - will visit

don't go - is

has - will visit

don't has / won't go

swim 

gets

will sit 

will I do 

run

comes

leaves

tell

If you keep silent , you won't wake the baby up

Should you travel to Hanoi, please send Minh this book

Should you study hard, you will pass the exam