VI: 1, Last month, John's mother bought a computer for him
2, She want to replace an old typewriter
3, She hoped John would use the computer to write essays
4, But he spent all his time playing computer games
5, He neglected his studies 
6, Therefore he failed all his examinations
7, When John relised that he made a terrible mistake that happened
8, Now he uses the computer mainly for typing his essays
9, He play computer game only in his freetime
10, Recently he topped his classemates in the mid-year examination
11, The students stayed home because a storm was approaching 
12, I didn't have any umbrella so I got wet
13, He is saving his money in order to travel in Europe next summer
14, If you don't leave now, you'll be late for class
15, Jane had a sorethroar, however, he still went to work 
16, He is so rich that he bought a whole island
17, There isn;t any air in one of the tires so I can't ride my bicycle
18, I got class on time although I missed the bus
19, Because of the bad weather, we didn't really enjoyed our holiday
20, I had a lot of studying but I went to a movie anyway