1 participate 2 access skill 3 expand something 4 cause 5 source 6 challenge 7 opportunity used 8 consumption do or a) make something happen b) a new or difficult task that tests somebady's ability and c) the opportunity or right to use or see somebody or d) take part in e) a place, person or thing that you get something from ) to become greater in size, number or importance 9) the act of using energy, food or materials, the amount h) a time when a particular situation makes it possible to achieve something
2. I learnt mathematic, english, literature, geography, chemistry, music and many others sudjects in school.
3. I left school two years ago.
4. I became a student last year.
5. I spent my last summer vacation at home.
6. I saw my friend last Monday.
7. I got a dog on my last bithday.
8. I invited six peaple to my bithday party.
9. Because It was too small for me.
10. I stayed at my friend's all night long.
11. I payed fifty dollars for the jacket.
12. I saw a cartoon on TV yesterday.
2 if she studied more, she would be a better student.
3 they would have seen the Queen if they hadn't visited London on that day.
4 if you should win that competition, you would be rich.
5 if i lived in France, l would speak French well.
6 if they had locked the doors, the burglars wouldn't have got in.
7 we'll have a party if Alan passes his driving test.
8 i would give John your message if i should see him today.
9 they wouldn't have had any money if their cousin hadn't lent them some.
10 those plants won't grow if you don't water them.
11 i would buy that bag if it were cheaper.
12 if she ... (open) the letter, she would have been surprised.