Many of them turned a deaf ear to his advice, ________ they knew it to be valuable.
| A．as if | B．now that | C．even though | D．so that |
-Are there any English Story books for us students in the library?-There are only a few, _____.
| A．if any | B．if there | C．if some | D．if has |
Sun Yang, a young Chinese swimming talent, ________ several gold medals before the 2012 London Olympics.
| A．won | B．has won | C．had won | D．were to win |
In the 16-19 age group，1 of women smoke ______ 8 of men.
| A．comparing to | B．comparing with |
| C．compared to | D．compare with |
Though ______, many laws of nature exist.
| A．not having been discovered | B．having not been discovered |
| C．not having discovered | D．having not discovered |
While prices are rising so fast，many people are working out ways to________their expenses.
| A．cut down | B．put down | C．turn down | D．settle down |