Fill in the blanks with modal auxiliary verbs. Modal verbs are will, would, shall, should, can, could, ought, may, might and must. Their grammar is different from that of other verbs : they have no infinitives, participles or past tenses. 

Travel situation : 5 expressions useful in the airport. Questions at the check-in counter. 

Travel - In the Airport  - 5 Advanced Expressions

travel-in-the-airport-5-advanced-expressions

Let's do English ESL general grammar practice. Fill in the blanks with modal auxiliary verbs. Modal verbs are will, would, shall, should, can, could, ought, may…