What are people supposed to do when they meet ________the first time? —They are supposed to bow. [ ]

Have you ever seenbad weather?

On April 14, 2010, a serious earthquake happened in Yushu. More than 2,000 people ______ in it.

The robot is made_______ all the housework.

Mum, please let us, Lily and me, go to visit the new provincial museum tomorrow, ?