﹣Is that apple tree？（　　）

﹣Yes．My father planted it in 2008．

A．aB．anC．the

﹣The water in the glass is sweet．Did you put any in it？（　　）

﹣Yes．I added some to it just now．

A．sugarB．saltC．oil

﹣This camera is too expensive．Do you have any others？（　　）

﹣Sorry，but that's the one．

A．biggestB．longestC．cheapest

It is necessary people to have food and water every day．（　　）

A．ofB．forC．with

﹣3﹣D printing could be used to build a house in less than 24 hours．

﹣It amazing．It's my first time to get to know this．（　　）

A．soundsB．smellsC．tastes