If you learn a foreign language, ___________________ (1). That’s why learning a second language can be difficult.
Small children can learn a new language very easily. If they are surrounded by people speaking a different language, __________________________ (2). But as people grow older, ___________________________ (3). People gradually lose the ability to learn the grammar and ____________________________ (4). People who learn a new language as adults often have a «foreign accent» __________________________ (5).