---Excuse me. Is the library open all day?--- . Only from 8 a.m. to 4 p.m.
---Never touch my computer while I’m away. ---Sorry, __________.
---We had a football match with No. 15 Middle School yesterday. ---________. I missed it.
---How did the accident happen? ---You know, it ________difficult to see the road clearly because it_________.
---My house is very near a busy street. ---It ________ be very quiet.
The sign on the right tells us taking photos ________here.