_____ alone in the large house, the little boy had to learn to survive by himself [ ]

Did you visit the Big Ben in London?—- No, we ______ it, but we spent too much time shopping.

Did it ____ you 4 hours to get to Shanghai last week —Yes, just 4 hours by bus.

These cakes ________delicious! Can I have ________ one

Had I mastered the statistic technique, a large amount of time and, energy