Modal verbs
There are a lot of modal verbs in English and you need to use them correctly, so, come on, let's practise :
Perfect modals - Intermediate-advanced
Modal test (everyone) - Elementary-intermediate
Modal test - Intermediate
Modals test - Intermediate
Modals : can , could, must, have to, should - Intermediate
Have to / don't have to / can / can't / should / shouldn't - Intermediate