The committee___been arguing about the economic problems among themselves for many hours.

If only the committee _________ the regulations

If only the committee _________ the regulations 选择

Recently a world plan to attack illiteracy has been ______ by a committee of UNESCO expert

Much _____ said about the problem but nothing _____ been done so far .A.were，hasB.is，has

If only the committee ______ the regulations and

The writer argues that going about the problem of pronunciation in the wrong way is ______