My train arrive in New York at eight o'clock tonight. The plane I would like to take from there ______by then.

Generally speaking, the hard one works, _______.

This robot is supposed to save a lot of labor, but it remains a problem if it ______.

Postage______,thenecklacewillcostyouatleast650yuan.

We hadn't met for 20 years, but I recognized her_____ I saw her.