I asked her whether she had done all the work herself ________ whether she had had asked sb. for help.

 English is a language shared by several diverse cultures，each of——uses it somewhat  differently.

I think _______ impresses me about his painting is the colours he uses.

The dog may be a good companion for the old. _______, the need to take it for walks may be a disadvantage.

_______ is expected, according to the online survey, is _______ the price of housing will not go up any more.