根據(jù)下列句子的意思,用括號(hào)中所給詞的正確形式填空,每空限填一詞。
1.He is going to celebrate his ___________ (forty) birthday this Saturday.
2.Jim is fond of sports now, so he is much ___________ (healthy) than before.
3.It’s hard to give up ___________ (smoke), but you have to.
4.Before making an important ___________ (decide), think it over.
5.Computers are _________ (wide) used in our daily life.