At the age of 29,Dave was a worker, __________ in a small apartment near Boston and __________ what to do about his future.
Generous public funding of basic science would _________ a good many benefits for the country’s health, wealth and security.
Ants are the most common life form on earth, ___________ tiny, their combined weight is greater than that of the combined weight of all humans.
----Did you remember to pay the telephone bill? -----The telephone bill? ____________.
He expected there ____________ more room for him to put in a desk.
--Surely you can turn to David for help. ---_______ He is the last one you can rely on.