根据句意用括号中单词的适当形式填空，使句子的意思完整、正确。
Shanghai is much ___________(big) than my hometown．
Li Ming goes to see his grandparents at a        (fix) date every month．
We can’t find the differences between these two people____________(easy)．
“You’re not children any more, so you’d better do it by_________ (you)．” the father said．
— I want to study abroad, but I’m afraid I won’t be used to the lifestyle there．
— It’s really hard to make the              (decide)．