—Is it necessary to look up every new word when I come across it in reading?—No. You ________， because you are likely to guess the meaning from the context.

If you often go to a gallery, it ______ well change forever the way you look at art.

Finally, the team reached the top of the mountain,       they found some rare plants.

---Who is the tallest boy?      ---It ______ be John.. John is of medium height.

In China's countryside, villagers often have the same family name, but ________ not be closely related.