Old people shouldn’t . In fact, they have stronger and clearer minds.
| A．look down | B．be looked down |
| C．look down on | D．be looked down on |
Lisa used to ________the bus to go to school，but now she is used to ________there．
| A．take；walk |
| B．taking；walking |
| C．take；walking |
| D．taking；walk |
Students should learn how ________ problem.
| A．solve | B．solving | C．can solve | D．to solve |
—Why is Linlin practicing speaking English?
—________ abroad for further study.
| A．Go | B．Gone | C．To go | D．Goes |
—Why are you so excited today?
—We were told ________ a picnic this weekend.
| A．have | B．to have | C．having | D．had |
How kind you are！You always do what you can ________ others.
| A．help | B．helping | C．helps | D．to help |