Finally they agreed ____ the terms of the contract.
Living on Mars isn’t ________ as it sounds.
Visitors ________ take an animal or any other item prohibited by the Expo Bureau to the Expo Park.
One way to understand thousands of new words is to gain ________ good knowledge of basic word formation.
The teachers in Senior High Three would like to answer ______ worry the students, especially when the College Entrance Examination is coming.
_____ ashes from the volcano in Iceland have caused problems for air traffic and business, scientists don't think it will have long-term effects on human health.