Between the two parts of the concert is an interval, ___the audience can buy ice-cream.
The committee is discussing the problem right now. It will_____ have been solved by the end of next week.
一Have you handed in your schoolwork yet? 一Yes,I have.I guess it _____ now.
Being a parent is not always easy, and being the parent of a child with special needs often carries with ___ extra stress.
____ twice, the postman refused to deliver our letters unless we changed our dog
The biggest whale is ___ blue whale, which grows to be about 29 meters long-the height of ___ 9-story building.