Steel and iron can be used ______ bridges as well as machines.
In our university there are several big parks ____we students can go to enjoy the beautiful scenery.
Yesterday I had a word with the CEO of the company, ___ who used to teach at Beijing University.
Never before______ so highly successful in his attempts to forecast the weather accurately on a small scale.
Measures __________at the meeting yesterday must be taken to ________Influenza A from spreading all over the nation. A referring to; prevent B refering to; protect C referred to; prevent Drefered to; protected
The news_______ we moved into the new school_______ quickly in the town. A.what; spreaded B that; spread C which; spreading D that; spreaded