—Must we keep the window _______ all the time?—No, you don’t have to.A.opening B.opened C. open
—_____ have you travelled abroad with your parents?—Only twice.
The stones _______ from the cormorants’ mouths by the fishermen.
We have to _____ the sports meeting till next week because of the bad weather.
While Rose ______ for the lift, she is listening a recording about the Eiffel Tower.
Man-made wonders are ____ than natural ones.