A noun clause is a subordinate clause that is used as a noun. A noun clause may be used as a subject, a direct object, an object of a preposition, or a predicate nominative. A noun clause usually begins with one of these words: how, that, what, Whatever, when. Where. which, whichever, wito, whom, whoever, whose, why. Which sentence contains a noun clause? You may take whichever puppy you want. B] I like to exercise soon after get up each morning, The room became cold quickly after the power went out Since the car was in the shop: we had to ride the train.​