18. ----- Has Mary finished writing her article ? ----- No, and it _____ before class was over.
Old-fashioned phones matter when wireless networks ________ in disasters.
While intelligent people can often________the complex, a fool is more likely to complicate the simple.
As the train ran faster and faster,the lights of the city were soon ________.
At the edge of the grass,there's a sign saying“________ the grass”.
Suddenly I realized that I had stayed here long and ________ to say goodbye to the host.