Insert modal verbs must, have to, should :

  how long have you been trying to find a job?

for three years. it was really difficult.

how many jobs have you had?  

about thirty, maybe more i have been doing everything.

how long have you been standing here today?  

i have  been waiting since 8: 00 this morning, and i'm freezing.  

people all over the world are fond of sport. sport activities are very important for the growing organism of a child. children showed not neglect this fact.

there are many sport clubs that they can join us. light athletics gives much opportunity to those who go in for it. it includes track field events: running, long-jumping, high jumping, discus throwing and others.

many children are fond of ball games: basketball, volleyball, football. they are so exiting. besides they are played all year round. children like to take part in the competitions to see who is the quickest, the strongest, who can jump best, who is the best swimmer or player. pupils in different classes hold competitions in different kinds of sport. many boys and girls show good results. all the competitions and games are very popular with the pupils. a lot of fans always come to watch them.

my favourite sport is basketball. basketball is a wonderful sport. it; s a good exercise too. it makes us strong and healthy.

to become a good sportsman you must train a lot. if you want to be good at something you have to work hard. practice makes perfect.

1) was, were

2) was

3) is

4) were

5) are

во всех позициях грамматически можно использовать и отрицательную форму. 

everyday i wake up and go at school. i can`t understand why other pupils don`t like school. first of all, it is a very interesting and useful place. at school you can get many new knowledges everyday. i have many favourite lessons: russian, history, mathematics,litrature. i`m so proud of me when i get excellent marks, but i`m learning in order to be clever, not just to get good marks.

also you can`t forget that school is place where you meet your friends. you can chat, laugh, have fun.

one of the reasons the youth is the best time of life is school that`s why all we shouldn`t waste time