Summative Practice Units 1-4 3 Choose the correct forms. 1 How many books have you borrowed / have you been borrowing from the library this year? 2 How long have you been reading / have you read this novel? 3 Imet/ was meeting him when I was working/ worked abroad. 4 When I got / had got home, I discovered I had lost / lost my keys. 5 By the time he was thirty, he had already become / already became the manager of the company. 6 The teacher asked the students to finish to write / writing. 7 I can't find my glasses. I might have left / might leave them in the library. 8 We used to be / would be friends, but we quarrelled two years ago. I haven't seen / haven't been seeing him since / for then. 100 with the correct form of the

Dear, Alex,

I was so glad to get your letter. I am looking forward to seeing you here. YOu know you are always welcome. 
As for your questions I would like to offer you some places. Do you like music? We will have a concert next month. The band is awesome. They play classic mixed with rock mostly. Are you up to? 
In the evening you can walk a little, see the sightseeing because we have a lot. Different museums are here for you to enjoy as well. 
We usually have quite cold wweather in January. However, this year it seems it will be quite warm. You should bring some warm clothes anyway. It is always useful here. Take a coat and warm trousers. That will be quite enough. 
Wait! boots! dont forget about them. 

I hope to see you soon.

Best regards,
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Fill in the correct word derived from the word in brackets.These days it is impossible to open a newspaper without reading about the damage we are doing to the environment. The earth is being threatened and the future looks horrible. What can each of us do?We cannot clean up our polluted rivers and seas overnight. Nor can we stop the dissappearing of plants and animals. But we can stop adding to the problem while scientists search for answers and laws are passed in nature’s defence. It may not be so easy to change your lifestyle and habits completely  but some steps are easy to take: cut down the amount of drives you do or use as little plastic as possible. It is also easy to save energy, which also reduces house bills.
We must all make a personal decision to work for the future of our planet if we want to ensure a better world for our grandchildren.