The _______ boy was last seen _______ near the East Lake.
–Which is _______more developed country, the United States or Canada?–The former in_______ way.
The safety helmet saved the worker; otherwise, he_______ by a flying object.
This project _____ considered thoroughly, and I’m sure it _____ finished on time.
–Were they late for the play?–Not really. As soon as they_______ themselves in their seats in the theatre, the curtain_______ .
—You were brave enough to argue with Mr. Smith. —Well, now I regret _______ that.
—You were brave enough to argue with Mr. Smith.
—Well, now I regret _______ that.