—Putting on a happy face not only helps us make friends but also makes us feel better.
—______.
| A．I’m with you on that | B．I’d love to | C．It’s up to you | D．It’s my pleasure |
The children all turned ____ the famous actress as she entered the classroom. 
| A．looked at | B．to look at |
C．to looking at | D．look at |
Edward, you play so well. But I ______ you played the piano. 
| A．didn’t know | B．hadn’t known |
C．don’t know | D．haven’t known |
She brought with her three friends, none of ______ I had ever met before. 
| A．them | B．who | C．whom | D．these |
I tried phoning her office, but I couldn’t _______. 
| A．get along | B．get on | C．get to | D．get through |
His sister left home in 1998, andsince.
| A． |
had not been heard of |
B． |
has not been heard of |
C． |
had not heard of |
D． |
has not heard of |