The city is believed over by sandstorms from AD200 to AD400.
.On the wall _______ two large maps.
.Don’t you think it _______ that the new technique should be spread to more areas?
.The growing speed of a plant is influenced by a number of conditions, _______are beyond our control.
.The top leaders of the two states are holding a meeting in a friendly _______.
.We made our monitor _______ of our football team.