Put the verbs in brackets into the correct present/past perfect tenses. 1) (everyone/already/start) their presentations on timekeeping devices? I’m feeling lost because I 2) (plan) to present the water clock, but I 3) (just/learn) that someone else 4) (work) on that topic since yesterday. Which topics 5) (not/choose) yet?
2) Hi Rob! Candle clocks 6) (select) by Julie, but after she 7) (research) them for a few hours, she decided to present the hourglass instead. So candle clocks are available, but Julie’s problem was finding up-to-date resources. Although the passing of time 8) (measure) with candles from Europe to Japan before the invention of the mechanical clock, not a lot. 9) (write) about candle clocks.

Reading books is the key to our imagination.Each of us has a favorite book.

My favorite book is Harry Potter and the prisoner of Azkaban. I generally love the Harry Potter series of books but this is the one I really like.

In this book, Harry and his friends are introduced to the people of Azkaban as well as their spirits, the Dementors. Then it turns out that the famous prisoners Sirius black escaped from Azkaban. When he met with Harry, he wanted to talk to him, but Harry was negative.

At the end of the book, Sirius becomes like a father to Potter.Harry knows the truth and moves in with Sirius at his house.

1 You can’t have finished already! You’ve only just started!

2 He needn’t have spoken so loudly. We’re not deaf.

3 He wasn’t able to open the zip file although he tried for at least half an hour.

4 She might not have left the office yet. Her computer is still on.

5 Mary obviously has natural talent, but she must have had some singing lessons at some point.

6 I really don’t think you should buy that laptop. It costs a fortune.

7 In my opinion, he shouldn’t have thrown in the towel. I thought he had a good chance of winning.

8 If he decides on a career in the army, he will have to get his hair cut.