Not only can ______shut-eye leave us feeling tired and lazy but it can also be damaging our health and looks.

When_________ your English teacher _________ his hometown— He_________ for nearly two months.

Much to our relief, although we are not that rich, our income is now double______it was five years ago.

Will you waste your time andmoney on that — Certainly ________

WeChat(微信), first released in 2011, provides great paying convenience for the users _________ a text and voice messaging communication service.