The number of wild lions in Africa (非洲) no more than 15,000 in the year 2010. — Like tigers, they are really in danger of dying out, too.

We saw Hobo jumping into the room _____ the window. [ ]

Will you stay at home until your sister comes back? —Sorry, I _______. I have a meeting and have to go in ten minutes.

I have _______used to ________with chopsticks for almost one year.

There ______ little water in the river.