The doctor put her hand in a cast ________her bones could heal.
The doctor put her hand in a cast (so that) her bones could heal.
Her cast is hot __________ it makes her arm sweaty and itchy.
Her cast is hot(, so) it makes her arm sweaty and itchy.
Annie studying English _________ she can get a better job.
Annie is studying English (so that) she can get a better job.