David, is this your sister’sbike — No, it’s not ______. It’s my brother’s.

He seems _________the homework, for he was taking a walk on the playground.[ ]

This story is very ___________.I feel quite __________.

The hall had no spare seats left last night ________，the performance achieved a great success [ ]

er to find the missing boy, the young couple allthey can over the past twenty-four hours