[ Grammar ]
Bob and Pamela (pack) their suitcases since 6 o’clock.
a) have been packing
b) have packed
c) having been packing
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Grammar › ViewWhat time ….
A. the train leaves?
B. does the train leave?
C. is the train leaving?
D. leaves the train
Prepositions › View
John needs to submit the report _________ his boss before 5 pm.
A. At
B. To
C. Of
D. On