_____ creative looks like a good way to add years to your life.
| A．Being | B．Been | C．Having been | D．Be |
Sometimes_________good knowledge of_________ first aid may mean the difference between life and death.
| A．a; / | B．/; the | C．/; / | D．a; the |
-- I will take part in the English lecture competition next week.
-- ________.
| A．Come on | B．Congratulations | C．Good luck | D．Never mind |
. The glass doors have taken the place of the wooden ones at the entrance, ________ in the natural light during the day.
| A．to let | B．letting | C．let | D．having let |
. The latest job report gave a mixed picture of employment in the US, leaving investors without any clear sign ________ the economy is improving.
| A．which | B．that | C．what | D．if |
Every child is ________, with their own needs, preferences and talents.
| A．original | B．contradictory（对立的） |
| C．similar | D．unique |