A man cannot smile like a child，________ a child smiles with his eyes，while a man smiles with his lips alone.
| A．so | B．but | C．and | D．for |
________ themselves awake they sat on the floor and told each other stories.
| A．Keep | B．Keeping |
| C．To keep | D．To have kept |
A railway station is no place for a child ________ alone at night.
| A．leave | B．leaving |
| C．to be leaving | D．to be left |
With much work ________unsettled，the newlyselected president will have a hard time.
| A．remaining | B．remained | C．remains | D．to remain |
He was sitting on the floor ________ by books.
| A．surrounded | B．surrounding |
| C．surroundings | D．surround |
The weather turned out to be fine yesterday. I ________ the trouble to carry my umbrella with me.
| A．should have taken | B．could have taken |
| C．needn't have taken | D．mustn't have taken |