Replace the underlined word with a modal auxiliary showing necessity.

1.	Replace the underlined word with a modal auxiliary showing necessity. David needs to rush to the airport to catch his flight on time.
Answer» Replace the underlined word with a modal auxiliary showing necessity. David needs to rush to the airport to catch his flight on time.

Replace the underlined word with a modal auxiliary showing necessity. David needs to rush to the airport to catch his flight on time.

Answer»

David needs to rush to the airport to catch his flight on time.