Stressful environments lead to unhealthy behaviors such as poor eating habits, which _____ increase the risk of heart disease.
The old couple used to live deep in the countryside, without easy ________ to shops.
It is ________ challenge for graduates to get ________ job as unemployment is high nowadays.
—I'm sorry I've spilt some tea on the tablecloth. —________;it will wash out.
I am so tired,for I ________ English for 2 hours.
—Shall we go out to the seaside this weekend? —________ Ring me up at any time.