—I don’t think you should use the dictionary while reading newspapers.—_____, but I can’t do without it.                

I'm really concerned ahout you. If something _______ happen to you  call me at once. 

Some people who don’t like to talk much are not necessarily shy；they        just be quiet people.

There is a possibility that these hens could be frightened and lay fewer eggs       a sudden loud noise.

We would have called a taxi yesterday if Harold ________ us a ride home.