A group of scientists are travelling around Africa. How many coutries............... so far, I wonder?

Be careful with pain. It ........... a certain amount of lead.

Paul looks young for his age. He says he is 56 years old, but nobody ................ him.

It’s raining, and I see you don't have an umbrella. You can borrow mine, I ......... it now.

For many years American schools ............ federal aid for special purposes.

-Hello! May I speak to John, please?

-Sorry, he is out. He has gone to the library. He ............ for his History exam there.

I have just applied for a job in the local hospital, now I ........... for an answer from them.

Jeremy .............. basketball this season; he wants to concentrate on his studies.

About 85 percent of American students ............ public school, which are supported by state and local taxes.

What are you looking for? – I ........... my umbrella somewhere, and now I don't know where it is.

You may take this magazine. I ................. through it already

Today the world ......... so rapidly; things never stay the same.

I think you ............ very silly. Don't get out of bed. You'll only make your temperature go up again.

My cousin Jake has got a lot of books, most of which he ..............

You do not hear what I am saying because you ............ very absent­minded today.