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around the world took the old sailor nine months, ___ the sailing time was 226 days. A. of which B. during which C. from which D. for which D3. The factory produces half a million pairs of shoes every year, 80% ____ are sold abroad. A. of which B. which of C. of then D. of that 4. I have many friends, ____ some are businessman. A. of them B. from which C. who of D. of whom DHomework Imagine the difficulties the Viking met write 5 sentences about it 。 5. Eric set sail once again, this time with 25 ships, of which only 14 made it to Greenland. 埃里克又一次起航,這次一共有 25條船,只有其中 14艘到達了格陵蘭島。 have trouble (in) doing something “做某事有困難” Did you have any trouble( in) finding the house? 你找到這所房子有困難嗎? 4. follow “ 跟隨” He followed her up the stairs. 他跟著他上了樓。 2. long before “在之前很久” They achieved this long before Columbus ever set sail. 他