The last thirty years _________ the quick development in almost every field in China.
— Have you finished your experiment report, Jane?— Oh, my God. I've ________ forgotten all about that.
The children of the farmer prefer _________ in bigger cities to _______ in their hometown.
He seemed to have ________from the terrible experience, and looked happier.
—Help! Help! Police ...—________, Madam. What's the trouble?
We smiled ________when Dr. Smith told us Granny’s operation was a great success and that she would recover soon.