29. Before classroom, please turn off all electric devices.

A. leaving B. leaves C. left D. went

30. enjoying the working environment, he decided to leave the center.

A. Because B. So C. Although D. Because of

31. handsome and nice, he has been alone for nearly 20 years.

A. Though B. Because C. So D. Because of

32. up late, he was late for school.

A. Get B. Got C. Getting D. Gets

33. to text him messages, I told him my phone ran out of battery.

A. Not wanting B. Not wanted C. Wanted D. Wanting

34. Joanna met his destiny while with the kids.

A. playing B. play C. plays D. played

35. She felt the first drops of rain splashing on the ground while _ the road.

A. crossing B. cross C. crossed D. crosses