[ Grammar ]
“Our Internet connection was down yesterday. ” ” I’m sure that was frustrating.”
A. It could be frustrating.
B. It must be frustrating.
C. It can be frustrating.
D. It must’ve been frustrating.

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Vocabulary › Viewa hypothesis regarding the solution to a crime
A. motive
B. theory
C. alibi
D. deduce
Grammar › View
She _______ some novels.
A. have written
B. have writing
C. have wrote
D. has written