阅读下面短文，并根据短文后的要求答题．

Messaging app WeChat is being used for an ever longer period of time and is growing into a lifestyle choice embedded into daily activities and communication， a new survey has found．

In 2016， one﹣third of WeChat's 889million monthly active users spent four hours or more per day on the app， twice that of a year ago， according to the survey showed by Penguin Intelligence， a research arm of Tencent Holdings．

The average（平均）daily time spent is also up a bit，now at 66 minutes，surpassing that of Facebook's average 50 minutes recorded last year．

And it's becoming more popular than ever， spreading into new aspects of life from offline payments to receiving newsfeeds．

The survey also found a larger number of newly﹣added connects（联系） of WeChat users are casual acquaintances（泛好友）， especially in work﹣related communication． Such a developing situation is turning the app into a virtual（虚拟的） workplace． Over 80% of users have handled（接触过） office work on WeChat， from transferring documents and coordinating（协调） tasks to taking video calls and doing business．

"The all﹣in﹣one super app is completely changing the way we live． When lining up for coffee， I can't see a single customer holding a wallet，         ， they hold mobile phones over a reader and coffee are theirs，" said Fred Wellington， an Australian auditor working in Shanghai．

1）How many WeChat's monthly active users spent four hours or more per day on the app in 2015？（根据短文内容回答问题）　　

2）Please translate the underlined sentence in Paragraph 3 into Chinese．　　（请把第3段中划线句子译成汉语）

3）Why is the app WeChat being turned into a virtual workplace？ Give two examples．　　（根据短文内容回答问题，并从文中举出两个例子）

4）Fill in the blank in the last paragraph with one word．　　（根据对文章的理解，在空白处填入一个恰当的词）

5）Please give a suitable title for the passage．　　（请给文章拟一个标题）