The expression “when pigs fly” means:

Identify the sentence that correctly uses the negative form of the present perfect tense.

Segundo o texto, quais países das Américas relataram uma queda no número de novas infecções por COVID-19?

Which of these writers is known for their novel '1984', which criticizes totalitarianism?

Read the following sentences and complete, respectively, with the appropriate verbs/adjectives.I. “From the beginning, she always ______ to be someone...

Match the expressions with their correct meanings: ( ) Barking up the wrong tree ( ) Bite off more than you can chew ( ) Costs an arm and a leg ( ) Co...

An English teacher in Brazil notices that some students use informal expressions like "ain't" instead of "isn't/aren't" during oral activities. From t...