The lack of health facilities and necessary protection for medical workers partly ______ the epidemic (蔓延) of Ebola.
When you talk about a person’s _____, you are referring to the country, race, or social class of their parents or ancestors.
— But for your timely warning, we _____ into great trouble.— Well, you know we’re friends.
— Dad, would you please buy some strawberries for me? I love them. — I’d like to, but they are not _____ in winter.
— Are you sure the delegation will come to our school next week?— _____. The head of it has just emailed me about the departure time of their flight.
It was unfortunate that their new car ____ halfway to the airport.