Little Johnny felt the bag, curious toknow what it____. [ ]

Someone is knocking at the door. It mysister. It’s time for her to be back.

Today, I’ve downloaded __________ useful information on the Internet.

The city,________ by mountains and lakes,is so beautiful that they have decided to stay there for another two days. [ ]

I find this Math problem very ___ _. I believe the students can work it out .