[ Present Perfect Continuous ]
The postman____________ been ______________ at the gate for a long time. Ask him what he wants.
A. has…standing
B. had…standing
C. have..standing
D. having…standing
Select your answer:

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A. Reflexive
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What is the highest grade level in American public schools?
A. 12th
B. 18th
C. 9th
D. 3rd
