Question 35: Last week, our class went to Ha Long Bay for a picnic, ________ made US very happy then.
Non-defining relative clause:
– An indefinite relative clause is used to modify a noun or clause mentioned earlier in a sentence. It adds more information about the person, thing, or phenomenon being talked about. A relative clause always comes right after the noun or clause it modifies.
– The indefinite relative clause is not an essential part of the sentence and can be removed without affecting the sentence.
– Unlike defining relative clauses, indefinite relative clauses are separated by commas and cannot omit relative pronouns. Do not use that in non-defining relative clauses.
Eg: My boss, who is very superstitious, always in ghosts.
=> Answer A (Last week, my class went to Ha Long Bay, this trip made us very happy)
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