The engine of the bus was ______,and the bad weather added to the worries of the passengers.
—Do you mean that we have lost our way?—_____, my dear. We’d better ask someone for help.
__________ in the mountains for a week, the two students were finally saved by the local police.
When different cultures, we often pay attention only to the differences without noticing the similarities.
Unless ___ to speak,you should remain silent at the conference.
When I came back, I found my clothes , on the bed.