We got to the top of a mountain _________ we can see the whole city.

—Why do you look so worried?—My computer broke down and my essay ________ unfinished since.[ ]

The student did not catch the last bus, _______, it began to rain cats and dogs.

– Can you discuss the science report with methis afternoon — . Iwill be free after 2:30 in the afternoon.

“Does anybody know the definition of Nerd”thehost seated in the front.