The subject is Leroy. the verb is swims.
Answer:
In English grammar, the term sequence of tenses (SOT) refers to an agreement in tense between the verb phrase in a subordinate clause and the verb phrase in the main clause that accompanies it.
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17) Subject - Birds, Predicate - fly
18) Subject - The kindly old man, Predicate - walked quietly across the street
Answer:
Dependent clause.
Explanation:
A noun clause is a dependent clause that acts like a noun. They can act as subjects, direct/indirect objects. But noun clauses can begin with when, where, how, what, who, why...