Boy， your head teacher has set up a WeChat group． Could you tell me ______？
OK． I'll teach you． It's so easy． （ ）
A．how I join itB．why he sets it up
C．what it is used forD．when it was set up
Did Billy and Anna find a way out at last？
Yes，they _____ a plan and did it．（ ）
A．were working outB．worked out
C．are working outD．have worked out
It's useful for the deaf people to learn sign language．
Yes，it's a major way of _____ for them．（ ）
A．suggestionB．vacation
C．productionD．communication
The Rio 2016Olympic torch （火炬） began _____ 95﹣day journey in Brazil on May 3rd．（ ）
A．itB．itsC．it'sD．itself
The fire _____ at around 3a．m．local time when people were celebrating with fireworks．
I'm sorry to hear it．（ ）
A．broke outB．ran outC．went outD．put out
Attention，please! The last award will be _____ to the best singer of the year﹣﹣Coco Lee．（ ）
A．lentB．introducedC．donatedD．presented