_Stressful environments lead to unhealthy behaviors such as poor eating habits,which_______increase the risk of heart disease.
| A．in turn | B．in return |
| C．by chance | D．by turns |
----Thank you for helping me carry such a big box upstairs.
---- .
| A．After all, I am younger than you. | B．It’s my pleasure. |
| C．With pleasure. | D．It’s not worthy to mention. |
. _____thattheyhadmadeanimportantdiscoveryinscience.
| A．Littletheyrealized | B．Theyhadrealizedlittle |
| C．Littledidtheyrealize | D．Littlehadtheyrealized |
Come and see me whenever .
| A．you are convenient | B．you will be convenient |
| C．it is convenient for you | D．it will be convenient to you |
.That’s such a good radio _____ almost every one wants to buy ____people can pick up many channels about the world..
| A．that, as | B．as, as | C．as, that | D．that, that |
. They traveled on horseback for many days and reached ______ is now Gum Tree.
| A．that | B．where | C．it | D．what |