With more and more farmers moving to cities, an inadequate labor force is ________ becoming a major factor affecting the country's grain output.
“All _____ present and all _____ going on well.” our monitor said.
---- _____either you or he to go there? ---- _____is.
In this hotel, the bread and butter ______served for breakfast. Meanwhile, a knife and fork _____very useful for a foreigner.
I, not you , _____ in the wrong. Not I but he _____been invited .
It is said that the iron and steel works _____not far from here, but now there ______no means of finding it out.