7. Solve these problems: 1. Suppose that you have four electric cells. The current capacity of each cell equals 1.5 amp, the voltage output equals 2 V. a) Connect the cells in series. In what way should it be done? b) Connect the battery to a circuit whose resistance value equals I 5 ohms. What is the value of current in the circuit? 2. Suppose that you have three cells of the same value. a) Connect them in parallel. In what way should it be done? b) Connect the second battery to the same circuit: what will it result in? Suppose that one of the cells stops operating. What should be done in this case?

20.I never get up before 7.30.

21.Are you sure this dress suits me?

22.Susan usually does her homework in her bedroom.

23.The Earth goes around the Sun.

24. They are having difficulties at the moment.

25.Samuel always does his homework before dinner but today he is helping his Mum.

26.This week we are going on a trip to London.

27.Mary  enjoys music and dancing.

28.We rarely see litter on the ground in London.

29.Alic is waiting for you in the living room.

30.The phone always rings when I take a bath.

31.John is writing an e-mail at the moment.

32. I detest rainy days!

33.David cuts his hair every month.

34.Litlle Betty is cutting her drawing right now.

Объяснение:

Nowadays, almost every home has access to the Internet. We use the Internet for various purposes: gaining necessary information, taking part in communities, and even making money.

In my opinion, modern life can hardly be imagined without the world-wide web. The Internet can be helpful to everybody, including students. Firstly, students can use the Internet for learning purposes. I suppose that it is the strongest reason why they should get access to the Internet. Thousands websites place a mass of good information at the disposal of any person interested in mathematics, chemistry, foreign languages, etc. Many school teachers create special resources for their students. Secondly, the Internet offers a wide range of leisure opportunities. You can get in touch with your friends and send them e-mail messages, picture-cards, photos. You can make new friends from the whole world. The Internet offers a wonderful solution to the problem of loneliness.