Question 47: Larry drove all night to get here for his sister’s wedding. He _______exhausted by the time he arrived.
– must have V3/ed: surely, must have (founded speculation in the past)
Eg: He is tired now. He must have stayed up late last night.
– ought to + V (bare-inf): what to do
– could + V (bare-inf): can
=> Answer A (Larry drove all night to get here for his sister’s wedding. He must have been very tired before he arrived.)
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