__________ is possible that everyone will become happy if they change the habit of unhappiness.
Cars do cause people some health problems, in fact far more serious _____ than computers do.
More people are choosing to work _____ retirement age,since the living expenses are shooting up sharply.
On seeing_____ gift they wanted, the kids screamed with _____ delight.
Compared with male graduates, a(n) ______ small number of female graduates can get employed when they go job-hunting.
Reading the job ad, he wondered whether he was ______ to apply for it.