1) If these tests produce positive results, 2) If rubber is cooled to -200° C,
3) If safety measures had been followed,
4) If you want to study the files from the internet,
5) If we bought a new software package,
6) If you want to use this software package on more than one system,
7) If the goods had been sent by sea,
8) If we ran an additional test,
a) the accident would never have happened.
b) download them onto your computer.
e) we'd be able to do all the technical specifications in half the time.
d) we could estimate the experimental error.
e) they would have taken nearly two months.
f) it becomes brittle and will break.
g) we'll continue with clinical trials.
h) you'll have to get a site licence.

My yard is the most beautiful in the town, especially in summer. There are trees, flowered beds and green grass here. Everything is so beautiful. There is also a playground in the yeard where I play with my friends. There are small slides, merry-go-rounds and a sand-pit for kids. Our yard is being carried about by a keeper, that's why it is always very clean. My yard is also beautiful in winter. It is covered in white blanket. Trees are ice-glazed. Children ride sleds, play snowballs and make snowmen. I like my tidy and clean yard in any season.

I have the most beautiful yard in the city especially in the summer. Around bed trees with flowers a green grass everything is very beautiful. Also in the yard there is a playground at which I play with friends. For kids there are small hills of a roundabout and a sandbox. Behind the yard in which I live the janitor therefore it always the pure looks after. But my yard is also beautiful also in the winter. All yard becomes covered by a white cover Trees are showered with silvery hoarfrost. Children ride a sledge play snowballs and build snowmen. I love the well-groomed and pure yard at all seasons of the year.