---How much difficulty did you have________________ this problem?
---_____________. It's quite easy.
| A．to solve, Nothing | B．solving; None | C．to solve, None | D．solving; Nothing |
The ______ the kids learn to look after themselves, the better it is for their future.
| A．late | B．later |
| C．earlier | D．earliest |
_____ a lot of small ads are put up on the walls, out city will be untidy.
| A．Until | B．Though | C．If | D．Unless |
My mother often tells me not to ________ or not to look down upon others.
| A．show off | B．turn off |
| C．take off | D．get off |
Sorry, there is no Yangzhou Fried Rice now. It ______ only for lunch and supper.
| A．serves | B．served |
| C．is served | D．is serving |
I enjoy _____ to learn their different tradition and cultures.
| A．travel | B．travelling |
| C．travels | D．to travel |