Ahmed is a doctor. He ................. in a clinic. Here, we are talking about a permanent state.

Ali is a teacher in Riyadh. He works in Riyadh generally. But these four weeks, he .................... in Jeddah. It is a temporary state.

I ...................... 4 stories up till now. Here, we are focusing on the number of the books.

Amr always studies ......................... . He is an excellent student.

Water ...................... at 1.00 C. It is a scientific fact.

The water on the gas ............................. . Please turn it off, quickly or it is going to cause a big damage. (Here, we are focusing on an action that is happening now or around now.)

What are your vacation plans? I ............................. a month in Abha. I planned that last week. Here the decision is taken in the past to do something in the future.

A: Oh! Look at that shirt. It is wonderful.

B. WOW! I ................................. it. The decision is taking at the time of speaking.

The English class ........................ at 7.30 next Monday. It is a fixed timetable.

They’re interested in playing ............................... games such as chess.

I ............................ my homework when the light went out.

Ahmed, ................ lives next to me, is a great doctor.

30. The medicine, ___________ I bought yesterday, was not effective.

This is the school …………… I study.