It is reported that in our country cities ________ heavy air pollution that is 30 percent above the national standard or higher should try to meet standards by 2030.
–Did the book give the information you needed? –Yes. But _____ it, I had to read the entire book.
The companies are working together to createthey hope will be the best means of transport in the 21st century.
No decision ______about any future appointment until all the candidates have been interviewed.
I’ll give you y friend’s home address ______ I can be reached most evenings.
The hotel wasn’t particularly good. But I ____ in many worse hotels. A .was staying B, stayed C. would stay D. had stayed