When you call someone, it is polite to identify yourself. For example, if your name is John Smith and you were calling Robert Chen, you would say "Hello, this is John Smith. May I speak to Robert Chen, please?". When you answer the phone, it is ok to answer just "Hello". After your caller introduces himself, you would say one of the following:
"Hi John, this is Robert. How are you?"
"Speaking." or "Robert Chen speaking."
"I'm sorry, but Robert is not able to come to the phone right now. May I take a message?
"It is not polite to call someone before 9 am or after 10 pm, unless it is an emergency. ​

Задание 63 :
1. They are from Finland.
2. They are doctors.
3. They are caterpillars. ·
4. We are secretaries.
5. They are his daughters.
6. They are my brothers.
7. They are sharks.
8. His cousins are from Bulgaria.
9. My pets are dogs.
10. Her nieces are housewives.

задание 69 :
1. What is it? - It is a table.
2. Who is Kate? - She is my sister.
3. How old is your grandson?- He is 8.
4. Where is his daughter from? - She is from Turkey.
5. Who are David and Tim? - They are his brothers.
6. What is it? - It is an armchair. 
7. Where are their sons from? - They are from Canada.
8. How old are our grandparents? - They are 63 and 70.
9. What is it? - It is a frog.
10. Who is she? - She is my cousin.

I will stay at home if it rains this afternoonIf my brother goes abroad, I will be very worriedYou won't earn any money if you don't work more hoursMellissa will be able to go out if she doesn't finish her homeworkIf I go to the supermarket later, I will buy some tomatoesPeter will get wet if he doesn't take and umbrellaIf I find the book you lent me, I will give it back to youThey will be angry if we don't visit themWhat will happen if you don't go..Many workers will lose their jobs if that factory closes downI won't buy a bigger house if I don't get promotedIf he doesn't finish the vegetables, he won't have a dessertMy uncle will be able to go to the opera if remembers to get...If you don't put sugar.., it won't taste...if you don't hurry up, you will be late..Christopher will be so happy if he finds. .your motorbike won't break down if the mechanic checks itif you don't take aspirin, your headache won't disappear

Объяснение:

First Conditional в английском языке нужен для того чтобы описать возможный результат в будущем при определенных действиях в настоящем. Например: если ты будешь много заниматься, то ты обязательно поступишь в университет. If you study a lot, you will definitely enter the university. Важно помнить что хотя мы на русском говорим в будущем времени (если будешь заниматься), то в английском после слова if (если) нужно использовать настоящее время (Present Simple).Структура предложения: if+существительное (noun)+ verb in present simple, существительное+ will+ начальная форма глагола без to