1. Study harder or you fail the exam.

-> If you don't study hard, you'll fail the exam

2. He rides his bike to school.

-> He goes to school by bike

3. We had to cancel the picnic because the weather was bad.

-> The weather was bad so I had to cancel the picnic

4. We will probably create a robot that can look after sick people.

-> We might build a robot to take care of the sick

5. Mary started learning English 5 years ago. 

-> Mary has learn English for 5 years

1.If you don't study hard, you will fail the exam.

2.He goes ro shool by bike.

3.The weather was bad so we had to the picnic.

4.We might craete a robot that can look after sick people.

5.Mary has learnt english for 5 years.