—Why are those people gathering in the middle of the street?—I don’t know. There ________ be an accident.
This area experienced ____ heaviest rainfall in ____ month of May.
We offered these students a summer course ,aimed _____ improving their spoken English.
--I can’t find John .Where did you meet him this morning? -- It was in the hotel _____ he stayed.
.Don't ____ when other people are talking.
After supper she would sit down by the fire , sometimes for _____an hour , thinking of her young and happy days.