---Why was Mr. Smith suddenly fired by his boss?---Because he was found_______ in the non-smoking office.
She is a bit shy and _______ stand up and answer the teacher’s questions.
The teacher asked Mary _______ she could tell him the general idea of the poem.
She changed so much that I could hardly _______ her when we met again after a separation of 20 years.
She will tell us why she feels so strongly that each of us has a role _______ in making the earth a better place to live on.
I’d like to go ________ to help people, ________ when they are in trouble.