AlthoughtheCarbon14methodofdatingoldobjectsisnotfoolproof,itisthebestmethodavailableatpresent
Teachershavetoconstantlyupdatetheirknowledgeinordertomaintaintheirprofessional___.
Foodmustbemoistinordertohaveataste.
—Let'stakeacoffeebreak.
—__________We'vebeenworkingforhours.
Thisisthe_____pianoonwhichthecomposercreatedsomeofhisgreatestworks.
