11. Although the working mother is very busy, she still ____ a lot of time to children.
Only by working hard your dream of becoming a doctor.
It was because of the bad weather _______ the football match had to be put off.
Tom always prefers _________ rather than _______ a bike.
The doctor insisted that I _________ more fruit and vegetables.
He appears to be strong and healthy but, __________ he suffers from a weak heart.