=>

1. You can't have locked the front door. Here's the key.

2. As long as you keep calm, you will pass the driving test.

3. The man is believed to have escaped in a stolen car.

4. I must congratulate you on having drawn up some excellent plans.

1. I am sure didn 't lock the front dỏo. here 's the hey
-> You can look the front door without having key
2. Kepping calm is the secret of passing your driving test
-> As long as you keep calm, you will pass your driving test.
3. It is believed that the man escaped in a stolen car
-> The man is believed to have escaped in a stolen car.
4. "I think you ' ve drawn  up some excellent plans. I must congratulate you"
-> I must congratulate you are