1 . 通常情况下, 成功会带来幸福感。
Success, __________________ is often the case, leads to happiness

2 . Some polyglots, ________ can speak quite a few languages, may seem especially talented. (用适当的词填空)

3 . Laughter is the best medicine, _________ means keeping a good mood is helpful to our health.

A．what

B．which

C．that

D．it

4 . 中国运动员在杭州亚运会中赢得了201块金牌，这使我们很兴奋。（at the Asian Games in Hangzhou，gold medals，which引导定语从句）（汉译英）

5 . 他性格开朗，心地善良，随时准备帮助有需要的人，这反过来让他感觉很好。(汉译英)

6 . ________ it turns out, anything can be figured out if you break it down into simple steps. （用适当的词填空）

7 . 我们不得不穿着湿衣服睡觉，很不舒服。
We had to sleep in our wet clothes, ________ was most uncomfortable.

8 . Meanwhile, they exchange ideas and feelings with each other, through ________ they probably acquire more knowledge.（用适当的词填空）

9 . Communication technology has entered the 5G era,________will surely bring great changes to our life.

A．when

B．what

C．which

D．where