—When did your school hold the sports meet?—Last week. And I _______ the girls’ 400-metre race.
—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.
_____he is very tired , _____he still goes on working.
When we went into the park, we saw someone _____ Chinese Kungfu.
_____is watching TV. Let’s turn if off.