（）refers to varieties of language defined by their topic and context of use.

The attitudinal and emotional factors can be expressed ...

填空题The attitudinal and emotional factors can be expressed in an item of vocabulary. These are often referred to as（）.

The three main things that a learner has to acquire whe...

填空题The three main things that a learner has to acquire when learning a new structure are the form, meaning and（）of the structure.

“Knowing English” must mean knowing how to（）in English.

填空题“Knowing English” must mean knowing how to（）in English.