The students all wear the same uniform,so it’s hard for me to ________my son among them.

We don’t think the experiment is _______ failure. Atleast we have gained _______ experience for future success.

Sorry, I forget to post the letter for you— Never mind, ＿＿ it myself tonight

Qingdao lies______ the south of Shandong Province, ________ the north of Shanghai, and___________ the eastern coast of China

It seems that Jenny is a(n)______lady, for she always works more than 12hours a day.