---Excuse me. Is the library open all day? --- . Only from 8 a.m. to 4 p.m.
-----How many students are there in the classroom?------_______.
Students are supposed ________ hard at school.
--- I’m going to spend my winter vacation with my parents in Hainan ! --- __________ !
This film is as ________ as that one.
Please stop talking . Our teacher has __________ to tell us .