–––Who is singing in the next room? –––It_______ be Lucy. She has gone to Hong Kong.
Students shouldn’t go to school ________ breakfast. It’s bad for their health.
My family has two dogs. One is white, ________ is black.
Lin Shuhao is ________ good basketball player in the NBA. A. / B. a C. an D. the
---What ____________ you _____________ last weekend? ---I wrote some letters and read a book.
---My bike is broken. May I go ______ yours? ---Sorry, mine _______ broken down.