I’d like to send this letter ______ England ______ air. [ ]

Grandpa has changed a lot.- So he has. He spends more time than he used to ______ gameswith the children.

My name ____ Jack. Liu Ying and Sun Mei ____ my friends.

Rock music may _______nice to young people, but most old people can’t stand it.

Now, some robots are __ to do the same things _ _ people.