Ex2 1.The English name for the month August is derived by/from the name of the Roman emperor,Augustus Caesar.
2. Information about the artefacts is displayed on/at signs.
3. Our calendar is divided in/into 12 months.
4. Students learn about a range of devices from water clocks until/to merkhets.
5. Make sure all the key information is on/in your slides.
6. Nowadays, most people use their smartphones to keep track with/of time.
Ex3
Visual,sighting,standardised,perfect, well-executed
1 alignment
2 representations
3 time
4 tool
5 slideshow
Ex4
1. Unfortunately, my slides were because the font was too small. (EFFECTIVE)
2. Stonehenge was built in with the sun on Midsummer's Day.(ALIGN)
3. The speed of Earth's used to be a lot faster than it is today.(ROTATE)
4. The problem with sundials is their
when the weather is cloudy.(USELESS)
5. Avoid using fonts withlook pretty, but are hard to read.(EMBELLISH)
Ex5
1. The ancient Mesopotamian civilization/culture lasted for about 3,000 years.
2. The year is not divided into equal/equivalent parts: some months are longer than others.
3. The ancient Greeks are remembered for their skill/ability in maths,science and the arts.
4. Atomic clocks are the most accurate/fixed in existence

1. Present perfect
I have done my homework already.
We have no classes today, our teacher has fallen ill.
Have you seen this film?
I haven’t seen him since then.
Has she come yet?
2. Past simple
I have finished reading “Dracula” this week.
I’ve studied Spanish since childhood.
I visited the Louvre last year.
She spoke to him in a low voice.
Did you see Jenny two days ago?
3. Past progressive
When you called I was taking shower.

Charlie and me were already driving home when the engine suddenly stopped.
Were you sleeping when I called?
In the morning our elevator was not working.
I was sleeping when someone knocked at the door.

Mr. Fields said he should like a room for a week.

A receptionist asked him if he wanted Single or double room

Mr. Fields answered he wanted a single one.

Mr. Fields answered he if he had reserved a room/

Mr. Fields answered he had written them from New York a week before.

Mr. Fields answered him what his name is (was).

Mr. Fields answered he is (was) Fields.

A receptionist said to him they had received his letter, and they had reserved a room for him.

Mr. Fields wondered if there was a private bath in that room. 

A receptionist said to him that room had a private bath.

Mr. Fields asked her if it was an inside room or an outside room.

A receptionist said to him it was an outside room on the eighth floor — room 816.

Mr. Fields asked her what the charge was.

A receptionist answered him that the charge was eleven dollars a night.

Mr. Fields said he believed that room was quiet and he didn't sleep too well.

A receptionist answered him that room was very quiet as it was on the eighth floor, and he didn't hear much street noise. She asked him how long he was planning to stay.

Mr. Fields answered he was  planning to stay for a week.

A receptionist asked him if he was there on business.

Mr. Fields answered her it was partly business and partly pleasure and he had never been to Washington before and he'd like to see the city.

A receptionist said she hoped he would like it there.

Mr. Fields answered he hoped so too.