The microphone _______ them to keep in touch; in other words, it made it possible for them to contact each other.
So difficult ________ it to live in an English-speaking country that I determined to learn English.
In____review of 44 studies, American researchers found that men and women ____who ate six key foods daily cut the risk of ______ heart disease by 76%.
Terribly sorry, I came home at last. I _____of the supermarket ________so crowded.
With a basket on her back, the little girl is walking along the stream with green grass and red flowers ____ on both sides.
The report said a bus went out of ____control on a highway ____south of the city and rushed into a river.