6. Complete the sentences with the appropriate modal verb. a) Adults between 20 and 29 years old
be immunized against the flu.
b) I don't think you
buy this car now. You
see other
cars before buying it.
c) He knows he
worry about his daughter. She's a smart girl.
d) The weather
be unstable all day. This time of the year is always like that,
you
take an umbrella wherever you go.
e) Come on, Lily. You know you
forget your visa to travel abroad.​