Heinvited me to a dance after the show ChristmasEve.

I need help now! I have to fix a leaking pipe in my bathroom but I’m not sure ______to begin.

She insisted that we ________ the source of the river and begin our journey there.

Bob, can you read the number 15,858 —Yes, I can. It’s ________.

当你被介绍认识某人后, 你应该说: “____”。