题目

根据下列句子及所给汉语注释，写出空缺处各单词的正确形式，每空只写一词。1. You should __________ (覆盖) the food with the cloth, or it will get dirty.2. It’s reported that three _________(猴子) escaped from the local zoo last Friday.3. I asked him to leave, but he ________(拒绝), so he still stayed there.4.The boy _______ (伤) his leg while he was playing football. 5. The math problem is too difficult for me to work out _______(容易).如图，长方形ABCD中，BC=2，DC=1，如果将该长方形沿对角线折叠，使点C落在点C′处，那么图中重叠部分的面积是 ．