How many people remember listening to Orson Welles’1938 radio broadcast. “The War of the Worlds,†which convince thousands that space aliens had invaded the Earth?
Answer: D
Test points: tenses.
Analysis: The subject of the clause which generation refers 1938 radio broadcast , the predicate verb can not use the present tense. convince past convinced. (A) (B) remember + verb-ing form refers to remember to have done something is correct.