阅读理解。 1. We can know that Ting ting and Lingling are _______. A. sisters B. classmates C. friends 2. Tingting goes to London to _______. A. visit B. work C. study 3. The word 'delicious' in the last Para means '_______'. A. terrible B. nice C. bad 4. The weather is _______ in London. A. warm and humid B. rainy and hot C. cold and humid