John usually .............. very hard. In fact, whenever I ............... him, he ..............something. Choose the best alternative to complete the sentence.

Studies show that the vitamins in the food are ...................................... the vitamins supplements, and are ................. because of the other componentes of the food. Taking .......................recommended doses of some vitamins may cause problems. For example, the vitamins A, D, E and K are ................. soluble, which means they are stored in the body. High doses of these vitamins can be toxic.

“[...] Surprisingly, little ‘Al” Edison, who ......... the last of seven children in his Family, ...................... to talk until he was almost four years of age. Immediately thereafter, he .............. pleading with every adult he .................. to explain the workings of just about everything he encountered. [...]”

My aunt lives on a farm. When I asked her if she thought it would rain that day, she answered, “You know what they say, if ................