根据括号中所给的汉语写出单词，使句子意思完整正确，并将答案填写在标号为46~50 的相应位置上。
The YOG volunteers go for a meeting every    (星期日) these months. They hope to help the visitors from different countries better.
The sunglasses that the boy    (戴) just now are broken. He will buy himself a new pair.
The    （人口）of the world is increasing quickly. The earth is becoming more and more crowded.
Don’t complain about the weather, it will be much    (雾) tomorrow.
You can’t imagine how    (困难) he has finished his work.