We need to do this work with money and people than before.

Not until they left school how much their teachers loved them and helped them.

I read the 21st CenturySenior 2 Edition every day. —_____ no wonder that your vocabulary is solarge.

What has ________ done since 1989. —It has built many schools for poor children .

___________ the three questions, which one is the mostdifficult to answer