She didn’t sing the song ____ at the party last night.
He said that he _____ to Canada a few years ago.
—We really shouldn’t use plastic bags any more when shopping.—_____ It’s important to protect our environment.
Our country _____ progress in science and culture in recent years.
—What did our geography teacher say?—She told us that the earth _____ around the sun.
When we went into the park, we saw someone _____ Chinese Kungfu.