Every boy and every girl in our school _____ to join one or two clubs according to their hobbies.

Linda and her sister____healthy.

 The number of smokers in China ________increased in recent years, and a number of them _________ the youth. 

– What a terrible collision accident! – Judging from the scene, personally, it is one or two car drivers, rather than the truck driver, who _____.

 It is I ____ singing in the garden.