Упражнение №1. Выберите правильный предлог направления. 1.The ant is crawling … (along/past) the floor.
2.It’s so stuffy here. Let me get … (into/out of) the classroom.
3.Put your book … (toward/onto) the desk.
4.You should walk … (around/through) the corner and you’ll see the library.
5.Our ball rolled … (up/down) the hill and fell into the river.
6.The car is moving … (onto/along) the road.
7.The plane is going … (through/onto) the clouds.
8.John is trying to throw his shoe … (past/onto) the garage roof.
9.Natan and Dina jumped … (into/down) the swimming pool.
10.The lion jumped … (over/across) the barrier.Упражнение 2.Составьте к следующим предложениям отрицательные и вопросительные предложения.
Образец:Tom walks to work every morning.-Tom doesn’t walk to work every morning.
Does Tom walk to work every morning?
1. Jim likes baseball very much.
2. You watch television all the time.
3. We went to the movies last night.
4. My parents are watching TV now.
5.My mom will drive the car.

Environment - a set of components of the environment, natural and man-made natural objects and man-made objects.
Components of the environment - land, minerals, soils, surface and ground water, air, flora, fauna and other organisms, as well as the ozone layer of the atmosphere and near-Earth space, providing a set of favorable conditions for the existence of life on Earth.
Pollution - into the environment of matter and (or) energy, property, location or number of which have a negative impact on the environment.
Contaminant - a substance or mixture of substances, the number and (or) concentrations exceed established for chemical substances, including radioactive and other substances and microorganisms standards and have a negative impact on the environment.
Air pollution - a really serious problem. Air is composed of oxygen, nitrogen, water vapor, and, thanks to our civilization, of a variety of toxic particles. The more of these particles in the air is, the less room is left in the atmosphere for oxygen.
   The problem of air pollution is not limited to the space outside. The air inside our homes and offices can be as dangerous to your health. The main source of pollution - cigarette smoke, but it is not the only one. Toxins are allocated even when you just cook. Every time you scratch the Teflon non-stick coating is allocated enough toxins to kill a canary.
 Greenhouse effect, which we all have been associated with the phenomenon of global warming, caused by toxic gases. The main enemy of clear atmosphere - methane. It is released from the decomposition of sewage.
Greatly affects our waterways. In every neighborhood, in every city there drain sewer, storm water from the highways and municipal enterprises directly into the river. Everything goes into the water, passing minor cleaning steps.

Present Perfect:

I have done my homework already.

He hasn't done his homework yet.

I have never met such a nice person.

Present Simple:

I go to school every morning.

We usualy have tea after breakfast.

She works as a shop assistant.

Present Continuous:

I am listening to music now.

We are watching TV right now.

Peter is playing football now.

Past Simple:

I saw him yesterday.

They painted the house two years ago.

Nick visited his grandmother last week.

Past Continuous:

I was playing tennis when he called me.

She was writing a letter yesterday at 5 o'clock.

We were cooking dinner when he came.

Объяснение: