Franklin's ability to learn from observations and experience ____ greatly to his success in public life.
| A．owned | B．contributed | C．attached | D．related |
Luggage may not be brought into the building ________ a guard has checked it first.
| A．when | B．because |
| C．after | D．Unless |
All over the city, history and modernity come together to make _______ an essential place for tourists to discover.
| A．each | B．this | C．one | D．it |
_______, Helen fell in love with Paris, a handsome Trojan prince, and ran away with him to the city of Troy.
| A．Married she was | B．As she was married |
| C．Married as she was | D．She was married |
Some classical music, _______ softly, can be gentle and help put one in the calming state of mind when just lying down to sleep.
| A．playing | B．played |
| C．having played | D．to play |
There was no significant difference between a girl and a boy _______ the structure and function of their brains.
| A．in place of | B．in need o |
| C．in search of | D．in terms of |