Teachers        be sensitive to the development level of each student so as to help them better.

-- My cat’s really fat. --- You ______ have given her so much food.

English is a language that many young people around the world         not speak perfectly but         at least understand.

Sometimes smiles around the world ________ be false, hiding other feelings like anger, fear or worry.

---Could I have a word with you, mum?  ---Oh, dear, if you______.