These machines work the cotton into a kind of soft, untwisted rope.
The cotton is worked into a kind of soft, untwisted rope.
I don't know what to do with my old clothes
could + verb
I threw my old clothes away yesterday.
could + have + past participle
I ordered these shoes online but they don't fit.
should/shouldn't + have + past participle
People ship the cotton to textile mills.
The cotton is shipped to textile mills.
Machines remove the seeds from the cotton.
Seeds are removed from the cotton.
Machines twist the fibres to make cotton thread.
The fibres are twisted to make cotton thread.
I’m going to dye this white shirt a nice bright red.
should/shouldn't + verb
How does this outfit look for the party?
should/shouldn't + verb
People use special machines to separate the fibres.
Special machines are used to separate the fibres.
Textile machines clean the cotton and separate it into smaller pieces.
The cotton is cleaned and it’s separated into smaller pieces.
My green necklace broke, so I threw it away.
could + have + past participle
More machines pull and twist the rope until it’s thin.
The rope is pulled and twisted until it’s thin.
I've bought four T-shirts and got another one for free!
should/shouldn't + have + past participle
Workers pick the cotton from the fields.
The cotton is picked from the fields.
Last year’s clothes are too small for me now.
could + verb