1. Mary can do this math problem in a minute.  This math problem ......................................................................................................................... 2. They can reuse glass bottles.  Glass bottles ................................................................................................................................... 3. People should not enter this area tomorrow.  This area ........................................................................................................................................ 4. They can make cheese from milk.  Cheese ........................................................................................................................................... 5. Students can borrow books from the school library.  Books ............................................................................................................................................ 6. People can use vegetable matter to make compost.  Vegetable matter ........................................................................................................................... 7. You must not wash this dress with hot water.  This dress ....................................................................................................................................... 8. She will pick you up at 9 a.m. tomorrow.  You ................................................................................................................................................ 9. We can‟t wear jeans at school.  Jeans .............................................................................................................................................. 10. How can adults learn English ?  How ............................................................................................................................................... II. Complete these sentences by using “It+be+Adj+ to V-infi…”. (Hoàn thành các câu sau sử dụng các từ cho sẵn và cấu trúc It + be + adj + to V …) 1. It's (normal/ feel) ……………………… tired after a long trip. 2. It's (difficult/ play) ………………… the piano well. 3. It's (impossible/ complete) ………………….. this exercise in 24 hours. 4. They were (happy/ see) ………………………….you after 3 years . 5. Mary is ………………………(angry/ hear) that she failed the exam. 6. It's not (easy/ learn) …………………………. Japanese. 7. It's (difficult/ explain) ………………….. some grammatical rules. 8. It was (important/ eat) …………………….. clean and healthy food. 9. It's (dangerous/ go) ……………………. out after midnight. 10. We are ……………………….(delighted/ hear) that you are well.