Tom is going _______ December, and she’s staying _____three weeks.
| A．on, for | B．in, for | C．at, in | D．in, on |
He sat downa computer.
| A．in the front of | B．in front of | C．in front | D． front of |
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. |