Read the sentence, fill in the gap, and then check

Tenses (active + passive)

any accidents are caused by bad driving.
2. A hundred people

… (usually, to employ) by the company.
A hundred people are usually employed by the company.
3. Cheese … (to make) from milk.
Cheese is made from milk.
4. Be quiet! The film … (to watch) over there.
Be quiet! The film is being watched over there.
5. What … (you, to do) these days?
What are you doing these days?
6. The project … (to develop) now by our engineers.
The project is being developed now by our engineers.
7. We … (to study) hard these days.
We are studying hard these days.
8. I … (not, to know) where he lives. We … (not, meet) each other for long.
I don’t know where he lives. We haven’t been meeting each other for long.
9. At first I didn’t understand Maths. Now I … (to start) to realize how easy it is.
At first I didn’t understand Maths. Now I am starting to realize how easy it is.
10. I’m sorry Ann can’t come to the phone, she … (to have) a shower.
I’m sorry Ann can’t come to the phone, she is having a shower.

than an hour. Let’s have a rest.
I am tired. We

have been walking for more than an hour. Let’s have a rest.
12. How long … (the Professor, to deliver) lectures? I think, he started at 30.
How long has the Professor been delivering lectures? I think, he started at 30.
13. My elder/older son … (to work) as a computer programmer this year.
My elder/older son is working as a computer programmer this year.
14. Tom’s room looks tidy because he … (to redecorate) it every other year.
Tom’s room looks tidy because he redecorates it every other year.
15. I … (not, to hear) from Mario for some time since he left Italy.
I haven’t heard from Mario for some time since he left Italy.
16. You may take tis magazine. I … (not, to read) it any more.
You may take tis magazine. I am not reading it any more.
17. How long … (it, to take) you to make tea?
How long does it take you make tea?
18. How long … (she, to know) Jane? But she doesn’t know her. They have never met.
How long has she known Jane? But she doesn’t know her. They have never met.
19. The government is worried because the number of people without jobs … (to rise).
The government is worried because the number of people without jobs is rising.
20. My colleague … (to have) a house in France since 2010.
My colleague has had a house in France since 2010.

have you been reading the story? All day.
22. Tom’s hands

are dirty. He … (to repair) his bicycle since morning.
Tom’s hands are dirty. He has been repairing his bicycle since morning.
23. You … (constantly, to fight) with your elder brother! Stop it!
You are constantly fighting with your elder brother! Stop it!
24. He is listening to music loudly. It … (to get) on my nerves.
He is listening to music loudly. It is getting on my nerves.
25. We are working here until they … (to come back).
We are working here until they come back.
26. He … (still, to develop) our new draft program.
He is still developing our new draft program.
27. There is nobody there. You … (just, to hear) things.
There is nobody there. You are just hearing things.
28. I … (to know) you since I … (to be) a child.
I have known you since I was a child.
29. … (you, to see) what I am writing on the blackboard?
Do you see what I am writing on the blackboard?
30. More and more people … (to take) part in TV shows.
More and more people are taking part in TV shows.