19. Put in since or for. 1. Tom and I have known each other_
six months.
2. It's been raining_
I got up this morning.
3. Tom's father has been a policeman_
20 years.
4. Have you been learning English_
a long time?
5.
_Christmas, the weather has been quite mild.
6. Ann has been on holiday_
three days.
7. That's a very old car. I've had it_
ages.​

a) If the weather is fine, we will (или shall) walk to town.
b) If the baby has a temperature, I’ll take him to the doctor.
c) I’ll be very happy if George comes.
d) If they had money, they would visit their relatives in Australia.
e) If we hurry, we will (или shall) catch the train.
f) If they had enough money, they would buy a new car.
g) I would (или should) invite him if he were my friend.
h) If you come with me, you will help me with the shopping.
i) If Carol had a mobile phone, she would phone all her friends.
j) If the students don’t read this book, they won't know the answers for the questions.
k) He’ll take his son to the park if he has time.
l) If they go to Nepal, it will be a fantastic trip.
m) Janet would stay longer in Prague if she had more time.
n) If you drink too much, you’ll be sick.
o) Susan will get a cold if she doesn’t put her coat on.
p) The children would be happy if their parents took them to the zoo.
q) If Jason comes today, we will (или shall) go to the disco.
r) Alice will feed the animals if she stays at home.
s) If my parents offer me a new mobile phone, I will (или shall) be very happy.
t) If Miriam studies hard, she will get good results.

The 20th century brought great changes into the theatre. Cinema, radio, television, video altered the course of the major performing arts and created the new ones. But still there are hundreds of puppet theatres, conservatoires and philharmonics, musical comedy theatres, drama theatres and opera houses where the audiences are excited at the prospect of seeing a play and the actors are most encouraged by the warm reception. But before going to a theatre you should book a ticket at a box-office. The most expensive seats are in the stalls, boxes and dress-circle. The seats in the balcony, pit and the upper circle are less expensive, they are cheap. Then at the entrance to the theatre the attendant tears your theatre ticket in half. He gives you your half back so that you can find your seat by its number. Another attendant shows you to your seat and sells a programme that will tell you which parts the actors are playing and how many acts there are in the play. Then you take your seat and may enjoy the play. I have always envied the dwellers of large cities. They have so many opportunities to enjoy themselves. Theatres, cinemas, variety shows, circus, conservatoire, concert halls, etc. are at their desposal. In provincial towns like mine is we have only amateur dramatics. That's why I always take the smallest chance to go to a theatre when in a city.