It's a pity that some of the people cannot come to the party.

The boys spent the whole morning possible answers to...

单项选择题The boys spent the whole morning possible answers to the question.

We travelled on the 6:45 a. m. train to Boston, arri...

单项选择题We travelled on the 6:45 a. m. train to Boston, arrived at 8:30 p. m.