How do we use words like 'must' and 'could' to make guesses about the present? You can't get a better teacher than Saskia! She'll explain it all in this English In A Minute. It _____ be winter – it’s 35 degrees here in London! A)must B)could C)can’t #bbclearningenglish #learnenglish #grammar #must #cant #may #might #could #elt #esl #efl #usefulgrammar #englishgrammar #modalverbs #englishskills #usefulenglish #onlineenglish #englishonline | BBC Learning English