Young Lee learned some English when she stayed in America, and last year she ____ herself Japanese.
| A．kept on teaching | B．went on teaching |
| C．kept on to teach | D．went on to teach |
.He went to American _____some English as well as ____.
| A．learning ,to travel | B．learning, traveling | C．to learn, travel | D．to learn ,to travel |
Do you have any letters ______ today?
-I had my son _______it this morning .Thank you anyway.
| A．post , to post | B．posting ,post | C．being posting , posted | D．to be post ,post |
_____more time, he’ll make a first-class tennis player.
| A．Having given | B．To give | C．Giving | D．Given |
I meant ____,but when I was leaving I couldn’t find her anywhere.
A.to do B. toC. doing D doing to
While building a tunnel though the mountains,________.
| A．an underground lake was discovered |
| B．there was an underground lake discovered |
| C．a lake was discovered underground |
| D．the workers discovered an underground lake |