I’m terribly sorry to turn you down this time, but I promise I will ______ to you next time.

My daughter is not sure what to_______ at the university; she can’t make up her    mind about her future.

Though having lived abroad for years, many Chinese still _____ the traditional customs.

Over the years the European Union has made great efforts to _______ the safety of food and protect the health of its people.

Like everyone else, we have our anxieties and sorrows. But ______ we are quite fortunate compared with some people.