Some passers-by witnessed the car accident____ five passengers were killed, a baby included.

If you go to the park tomorrow morning, ________. [ ]

A :Is there _______ in today’s newspaper?B: Sorry, nothing.

Why didn’t David ________his friend’s invitation to the picnic?—Because he had to prepare for the exam.

Is this your bicycle, David? —No, it’s not . It’s Helen’s.