OneoftheresponsibilitiesoftheCoastGuardistomakesurethatallships______followtrafficrulesinbusyharbors.

Mrs. Smith locked both the front and the back doors before she went to bed______thatsomeone might steal into the house at night.

Not all birds can fly , ______ do all birds build nests.

Iwasshockedbythenumberofpeoplewhoseemedtohavenothingbettertodowiththeirtimethan______toknowfishbetter.

Whenyoufallinloveforthefirsttime,it’ssurprising______inconveniencesyoucanputupwith.