I haven’t found my watch yet; in fact, I’m not sure ____ I could have done with it.
I'd like to write the letter with a ballpen. Could you please find________for me?
—Can I speak to Mr. Wang, please? —________
No matter what you say, I shall________my opinion.
The Panama Canal________the Atlantic________the Pacific.
—He promised to come to see you. —But he________. I've been alone.