a, She started driving 1 month ago.

→ She has been driving for 1 month ago.

b, He hasn't travellet by air before.

→ This is the first time he has traveller by air.

c, We began eating when it started to rain.

→ We have eaten since it started to rain.

d, She is lazy so she can't pass the exam.

→ If she weren't lazy, she could pass the exam.

e, Study hard or you won't pass the exam.

→ If you don't study hard, you won't pass the exam.

a,she has driven for 1 months.

b,this is the first time he has travelled by air.

c,we have eaten since when it started to rain.

d,if she is hard-working ,she will can pass the exam.

e,if you donnot study hard,you willnot pass the exam.