[ Grammar ]
i said to him,”Why are you working so hard?”
A. I asked him why he was working so hard.
B. I asked him why was he working so hard.
C. I asked him why had he been working so hard.
D. I asked him why he had been working so hard.

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Gerund › ViewThis morning, i spent 30 minutes….. this document.
A. to check
B. checking
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Last winter we (drive) ………………………………………… to Zakopane but we couldn’t ski much because there (be) …………………………………… very little snow.
A. were driving; was
B. drove; was
C. drove; were
D. were driving; were