It was with the help of the local guide ________ the mountain climber was rescued.
—Would you like to go to the dinner party on Saturday?—Thank you. I'd love to,________I'll be out of town at the weekend.
—Haven't you realized the use________the used paper?—Yes, already.
Being determined is a kind of quality and that's________it takes to do anything properly.
—What do you expect Mr. Zhang to succeed in?—________.
I'd like to write the letter with a ballpen. Could you please find________for me?