下列各句中，没有语病的一句是

What are you busy with? —The conference _______ in our city next week

It will cost a lot of time__________I think we shall need it and it will certainly be useful to us more or less

You’d better not ring me up between 9 and 10I________ an important meeting then” DrLee said

The film was set in a town _____ is nowpart of Jiangsu Province.