Most students exercise __________ a week.
| A．once or twice | B．one time or two time |
| C．once time or twice | D．once or two time |
She learns more about her job
| A．day by day | B．day to day | C．one by day | D．one after one. |
How about inviting Miss Liu a picnic with us ?
| A．have | B．has | C． having | D．to have |
He came back night ,and he felt .
| A．at ; happily. | B．at; happy . | C．in; happy . | D．in; happily. |
Can I ask you to china before?
| A．What ;have been. | B．if ;have been. | C． how, have gone . | D．if ; have gone. |
The small child was not old enough tohimself.
| A．have | B．wear | C．dress | D．put |