Our grade held the grown-up ceremony on March, 21st, _____ I have been well aware of my responsibility for our society [ ]

o pens are the same, but the red onecost _____________ that one

She used to ______ with her parents, but now she isused to ______ with her classmates at school.

____ the temperature might drop, coal was prepared for warming.

Here aresome new computer programs _____ for home buildings