Sentence 50: Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines eachof pair question questions You’d better change all the locks.
Knowledge: Conjunctions
Explain:
had better + Vo: what to do
in case + S + V: in case
or/ or else: otherwise
Sentence A uses the wrong structure of conditional sentence type 1: If + S + V(s,es), S + will + Vo
You should change all the locks in case the thief comes back.
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