built
Here built is the past participle of the irregular verb build. Follow the link below to find out more.
more information: build
strung up
To string up is to tie something between two objects
Example: We strung up a rope between two tree to act as a clothes line.
For more meanings of the phrasal verb string up, follow the link below to our language library.
more information: string up
they're
Notice that when you can say 'they are', the word is spelled they're. Follow the link for more about the three ways the word pronounced this way is spelled.
more information: they're their there
gave
Gave is the past tense of the irregular verb give. Follow the link below to find out more and listen to some examples.
more information: give
100 years'
Notice that the possessive apostrophe is used after the 's' because there is more than one year. For more about the possessive apostrophe, follow the link.
more information: possessive apostrophe