If you try to sit on two chairs,you will fall them For life,you must choose one chair. A between B under C among D into
---Would you please drive______? My plane is taking off. ----I’d like to, but safety comes first.
-How often do you go to the movies ? -________,but not often.
Why does Liu Tao look all day long?
We __________ used computers many years ago, but now they’re everywhere.
—Can you tell the differences between these two pictures? —Differences? Oh, no. They look quite____________.