Consider the following:

1. “Used to” expresses the idea of customary or habitual action in the past;
2. “Be to” is used to indicate plans, obligation, necessity or arrangements;
3. “Must” expresses unavoidable obligation or necessity;
4. “Will” and “be going to” can always be used interchangeably.

All the groups of words below show homophones, except:

All the suffixes below are used to form abstract nouns, except:

These are all true statements, except:

One of the verbs below cannot be followed by an “ing form”. Which one?

All the words below can be used as adjectives or adverbs, except:

The only right form to complete the sentence “Let’s go, ______?” is:

Which one of the alternatives below is not correct?

The suffix -ness is added to adjectives in order to form:

The suffix -ly is added to adjectives to form:

Which statement below is not correct?

Which one of the following groups of correlative conjunctions is not used together?