Mrs. Green_________a farmer, but she is a writer now.

(2013·银川一中二模)—Are you pleased with what he has done?—Not a bit. It couldn’t be________.

As we all know, the Silk Road _________ China to the West in ancient times.

can I wake upso early — Set the alarm at 5 o’clock, you’ll make it

It is the idea____smiles can get rid of cold ____has been proved by the researchers many times.