[ Infinitives and Gerunds ]
After a preposition, we use:
A. Infinitive
B. gerund

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First and Second Conditional › ViewIf it rains, I _____ an umbrella.
A. take
B. will take
C. would take
D. takes
Adverbial Clauses › View
A student will have completed over 13 business courses ______ from this university.
A. by the time he graduated
B. as soon as he had graduated
C. when he graduates
D. after he had graduated