— Why didn’t you arrive there until three days later? — Because the heavy rain _____ the difficulties of the journey.
Look!The department store is________the bank and the library.
—Would you mind my closing the window? —______.
—Are you going to Beijing for vacation? —Yes.want you to________me with some information about it.
Our country________the sixth population census(人口普查)already.
Nick is never late for work.He always gets to the office________. A.on time B.in time C.at times