It ______ the workers about 20 months to build the Huhang highspeed railway.
—Look! Here is a book about the history of Britain! —Really? Please show me _______ book.
—Excuse me. How much is the shirt? — _______.
---_____ is Mike? ---He is in the classroom.
---Good evening, Alice! ---
—Kitty, how does your brother look like? —.