This is a simple worksheet for teaching or revising modal verbs: can, can’t, must, mustn’t, may, might not and should. Recommended for intermediate students who are asked to match the sentences to get meaningful sentences and complete the gaps with: can, can’t, must, mustn’t, may, might not and should and choose the modal verb which best fits each of the sentences given. The worksheet is available in both colour and black and white version and the answer key is included.