SAT Form, Structure, and Sense Question
The Roman historian Suetonius's De vita caesarum, a biography of the Roman Empire's first leaders, is an extant work: it can still be read. By contrast, Suetonius's book on miscellaneous topics, Pratum, no copies of which <u>________</u> is a lost work: it can be accessed only indirectly, through references to it in extant works. Which choice completes the text so that it conforms to the conventions of Standard English?
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The trap here
SAT verb forms: when the blank needs -ing and when it needs a real verb — Choosing between "combines", "combining" and "to combine" is not about tense. It is about whether the sentence already has a main verb.