It is clear that no use can be made ______radium _____we don’t know clearly the characteristics of it.
Please tell me the way you thought of _______ the garden.
It was not until Bob took off his dark glasses that I _____ him.
—So you haven’t been to France? —_____. How I wish to go there for a holiday!
Because he has been out of _____ work for months, the young man now depends on his parents for _____ living.
-Sorry,I shouldn’t have rushed you. 一.How about having a walk in the park beside the theatre?