Every weekend my younger brother will go to help the old man far away my house,for which he often received some from the old man,such as a pencil and some sugar.
The lecture was going well until the projector(幻灯机) ______ and put the professor off his stride.
However, ___________ the technological difficulties of preparation, this material affords a further wide field of application(用途).
Anger and hatred boiled within her, but she forced herself to _______ the smiling face that people had always seen.
Whenever they were busy with their own business, Sam, feeling _________, would go out for a walk or a cigarette.
The audience rose, and loud cheers greeted the _________ of this speech.