—Must we keep the window _______ all the time? —No, you don’t have to.
—Is Lara similar ________ Tina?—Yes, they’re twins (双胞胎). But in some ways, they are different ________ each other.
—Do you like junk food? —Yes, I like it very much, ________ it’s not good for health.
—What do you think of Tom?—I think he is _________ in music. Listen! He is playing the piano so wonderfully.
—Which class sang ________ in the school singing competition yesterday?—Class 1, Grade 8.
—_________ do you go to the movies?—Once a month.