By 2050, medical technology _________ many diseases.
Only one of our gifted students______to participate in the final competition.
The Lake District,____________________ was made a national park in 1951, attracts a large number of tourists every year.
_______ has been a topic of continual geological research.
The packages___________________ so that it would be easier to carry them.
The phrase "keeps sellers on their toes" in the passage mostly means "______".
Education in many countries is compulsory________the age of 16.
In spite of her abilities, Laura has been_____________________ overlooked for promotion.
The boat was sailing north when a terrible storm_____________ .
______ his brother, Mike is active and friendly.
The examination was not very difficult, but it was_____________________ long.