[ Vocabulary ]
a necessary predecessor
A. Incompatible
B. Catalyst
C. Precursor
D. Synthesis
Select your answer:
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Present Perfect Tense and Simple Past Tense › ViewI _____ to school every day when I was young.
A. walk
B. walked
C. have walked
D. have never walked
Future Tenses › View
The flight arrives at 10:00 pm
A. a prediction
B. a departure or arrival
C. a sure plan
D. an uncertain prediction