It will be difficult ________ a robot_________ same things as a person,
Jenny and Mary are good friends. _________ often help each other.
May is the _________ month of a year.
The story happened_________ March, 2014.
I didn’t have _____ to say, so I said _____.
—Do you know about Yuan Longping? —Only a little. But Chinese people are proud of the man ______ hybrid rice is famous.