When a student asks it is worth staying up doing their lessons, a teacher may find it difficult to answer.
________is believed that the island can be a paradise(天堂)when people live________.
He ________ the last of his coffee and asked for the bill.
After a short rest,we went back to the office to ________ our meeting.
Who took my advice________?It's no use regretting now.
The bridge was named ________ the person who contributed a lot of money to it.