____ to the surprise of the teachers, the naughty boy turned out to be the person who saved the dying girl. 

   So far the young man hasn’t had any success; ______ he will keep trying.

I can ______ be a teacher. I’m not a very patient person.               

She is _____ out on Sundays.

 — Harry is too thin for his age.— So he is, but ______ he is very healthy.