题型：单选题 知识点：
题目：
56. I’m _______ I can’t go with you today.
57. —Is there a _______ near here？ I want to send a letter to my pen pal.
—Yes， it’s only one hundred meters away from here.
58. Please _______ my pet. I will leave home for London.
59. —What did you do last weekend？
—We _______ the mountain.
60. He’s so fat. He needs to lose _______.
