25. Welcome to the Historical Museum, everyone! This stone knife _______ in South Africa and experts can’t be exactly sure about its use.
She ________ down her book and ________ in bed.
Some researchers believe that there is no doubt _______ a cure for AIDS will be found.
To write his paper, he tried hard to collect _______ information as he could.
Don’t worry. You ________ have that book tomorrow.
Nearly all educators believe that a challenging situation can often _______ the best qualities of a person.