Use the proper article. Pay attention to the of-phrases:
a) 1. He leaned on ... back of... chair. 2. He saw the boy on ... roof of ... house. 3. ... neck of ... bottle was very narrow. 4. It was ... face of... old man. 5. ... cover of... book was very bright.
b) 1. He gave her ... little bunch of ... flowers. 2. I am looking for ... box of ... matches. 3. She joined ... group of ... students standing near by. 4. ... whole pack of ... cigarettes got wet and he couldn't smoke. 5. The house was reached by ... flight of ... steps. c) 1. She asked for ... glass of ... water. 2. We could see ... drops of... dew on the grass. 3. What do you say to ... bottle of... beer? --No beer, thanks, I prefer ... glass of ... mineral water or just ... cup of ... tea. 4. He took ...
jug of ... milk standing on the kitchen-table and poured himself a little. 5. Here's ... piece of ... chalk for you to write with.

The cook islands consist of 15 small islands and atolls with a total area of 240 square kilometers. they are located to the north-east of new zealand, their neighbours on the water border are american samoa, niue, kiribati and french polynesia.     the cook islands are divided into two groups: north and south. rarotonga (part of the southern group) is the most populous island and has the largest area. on the north coast of the island is the capital of the whole archipelago kurskogo — "the city of two harbors" avarua. cook islands are in free confederation with new zealand, i.e. they preserve their independence and sovereignty, but many of the functions of government assigned to a large state. dominant role in the economy of the islands is given over to tourism, agriculture and financial sector. cook islands got its name in honor of the english explorer james cook, and named the archipelago the least well-known explorer, our compatriot, ivan fedorovich kruzenshtern. by the way, about james cook. despite the current and firmly settled in people's minds the view that english traveler ate the natives of the cook islands, this is not true. cook was killed in hawaii. visiting the cook islands, you will be able to personally refute this version of fate of an englishman. here you will meet cheerful and good-natured people!

1.    We shall meet (Future Simple) on Sunday. We shan't meet on Sunday.
2.    I was very busy (Past Simple) on Wednesday. I wasn't very busy on Wednesday.
3.     He goes (Present Simple) to school by bus. He doesn't go to school by bus.
4.     My friend makes (Present Simple) many mistakes. My friend doesn't make many mistakes.
5.     I finished (Past Simple) school last year. I didn't finish school last year.
6.     My friend served (Past Simple) in the Army in the Far East. My friend didn't serve in the Army in the Far East.
7.     His parents work (Present Simple) at the same factory. His parents don't work at the same factory.
8.     The teacher answered (Past Simple) all our questions. The teacher didn't answer all our questions.
9.     He is fond (Present Simple) of folk music. He isn't fond of folk music.
10.  They will come (Future Simple) to see us at the weekend. They won't come to see us at the weekend.