你想让别人和你一起打扫教室,你说:A.Let me clean the classroom. B. Let’s clean the classroom. C. Let’s clean the window.
A : What's thirty ________ twelve? B : ________ eighteen.
A: ________ ? B: It's seven thirty.
A: Shall we go to the zoo? B: ________
A: It's seven in the morning. B : Shall we ________ ?
A: It's ten.You're late. B: ________ .