1 . 尽管我们做了充分的准备, Susan的到来还是打乱了我们的计划。(upset)(汉译英)

2 . 无论是什么季节，保持规律运动都很重要。(no matter)
________________________, it is important to work out on a regular basis.

3 . In almost every holiday season, extremely crowded ________ the shopping center is, eager buyers still pour in to take home items they may never use.

A．as

B．since

C．although

D．while

4 . 即使我们面临一些困难，也不要丧失信心，最后一切都会好起来的。（even though）
________, we shall not lose heart and everything will work out all right in the end.

5 . 青少年应该集中精力于 (concentrate on) 学业，尽管他们身边有很多诱惑 (attraction)。(汉译英)