However much you have done, you ought to     the help you’ve received from others.

If we can ______ our present difficulties, then everything should be all right. 

At first I was a little worried, but I'm glad that things have ________ quite well for me.

In the early days of radio, those who reported the news were ________ to speak with standard dialects. 

She is already 18 years old, but she _____ as if she were still a little girl．