[ 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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Gerund & Participle › View_________ their 3-year marriage, the husband regretted _________ his wife well.
A. Looking back on/not to have treated
B. To look back on/ not treating
C. Looking back on/not having treated
D. To look back on/not having treated
Grammar › View
“Is it hot today?” “No, _____ .”
A. it isn’t
B. it is not
C. it’s not
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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