更多雅思试题
- 1_________ which eat crops are pests.
- 2Sheep usually _______ together.
- 3He needed a _______ operation.
- 4The Arctic region is the ________ of the polar bear.
- 5It is an Eskimo custom to _____ noses as a greeting.
- 6During these ten years, many new methods have been _____ in the field of foreign language teaching.