56. I’m ______

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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 _______.

参考答案:

56. afraid 57. post office   58. look after 59. climbed   60. weight