How unhappy your roommate looks!-Yes, but he is not willing to tell me what it is ________ is troubling him.[ ]

Linda，make sure the tables ________ before the guests arrive

We often take _______, and we do eye _______ every day.

The new survey shows that the number of students________computer games has been on the increasein recent years. [ ]

There’s a saying, “Life is 10% ________ happens to us and 90% ________ we choose to react to it.”