She wasn’t very polite to me but I helped her.
---Will you help me with this mathematical problem? . ---Sure. Let me see.
He put on his tie, took one last look at the room and_____________ walked out of the door.
______, tears came to her eyes.
---Mary, I heard there was an explosion in Luzhou. Could you tell me how it _______?---Sorry, I don’t know much about it either.
. Can you tell me the way you think of________ the problem?