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1. In recent years, they have sought
(guarantee) the food supply by buying farmland abroad.
【考点】
固定短语; 动词不定式;
【答案】
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语法填空（单句）
普通
课时演练
换一批
1. This began to change in the 13th century
Giotto di Bondone.
语法填空（单句）
普通
2. So far, nobody has known
(precise) where the virus came from.
语法填空（单句）
普通
3. You should focus
getting the main idea of the text while reading.
语法填空（单句）
普通