—-I’m sorry , but I’m afraid I must be off now.
— ____ , Mr Smith. And have a nice day!
| A．So long | B．So much | C．So well | D．So far |
相关试题
He was busy writing a story，only _________ once in a while to smoke a cigarette．
| A．to stop | B．stopping |
| C．to have stopped | D．having stopped |
My sister，an inexperienced rider，was found sitting on the bicycle _________ to balance it．
| A．having tried | B．trying |
| C．to try | D．tried |
_________ in the fields on a March afternoon，he could feel the warmth of spring．
| A．To walk | B．Walking |
| C．Walked | D．Having walked |
_________ to reach them on the phone，we sent an email instead．
| A．Fail | B．Failed |
| C．To fail | D．Having failed |
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