---Mary was asked to do something important.
---It doesn’t matter. Let’s the work where it is left off.
| A．take up | B．take down | C．take in | D．take off |
Today’s world is changing rapidly, making _____ necessary for us to continue learning otherwise we can’t keep up with the time.
| A．us | B．it | C．this | D．one |
. ---- It’s a secret _____ you and me.
| A．beyond | B．within | C．between | D．among |
I think going swimming in my spare time, _____ I think is great fun and good exercise as well as a useful skill.
| A．which | B．as | C．that | D．what |
Thanks to the Internet, large quantities of information are now _____ to us in our home.
| A．incredible | B．reasonable | C．valuable | D．accessible |
. Man must produce more grain to support the _____ growing population on earth.
| A．already | B．just | C．ever | D．yet |