Bears_____ fat stores throughout the summer and fall to have energy enough to last them through their winter sleep.
Weon it for several hours but we haven't yet reached any conclusion.
---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.