Text 1:
The English language is one of the most popular languages to learn, perhaps the most spoken language around the world is English, and many people choose to learn the language simply to place them in a better position to secure work, or communicate more effectively with more people from around the globe. English might be a popular language to learn, but this doesn't necessarily mean it is a simple language to master, there are many challenges people face when learning English and if you are aware of these beforehand you stand a much greater chance of (master) the language.
by Kate Wilson
Taken from: www.omniglot.com/language/articles/englishlearningchallenges. htm
The correct form of the verb MASTER in the last line of the text is: