2 . Americans are still texting while driving, as well as ________________ (use) social networks and taking photos. (所给词的适当形式填空)

4 . 在国外生活了许多年之后，许多中国人仍然遵循着传统的风俗习惯。(现在分词的完成式作状语)
________________, many Chinese still observe traditional customs.

5 . 我看过不少版本的《哈姆雷特》的剧场演出，并且读过很多遍这部戏剧，我充满了信心——直到京剧来到我们城市！
________________ of Hamlet and read the play many times, I was full of confidence—until the Peking Opera came to town!

7 . We did not mark the route (路线) so we ended up almost ________ (miss) the sunset entirely. (所给词的适当形式填空)

8 . ______________ (separate) from other continents for millions of years, Australia has many plants and animals not found in any other country in the world.

9 . The underground system___（build）in the city now will be open next year.

10 . ________ many times, he still repeated the same mistake.
虽然被告诉过好多次了，但他仍然重复同样的错误。