Look at the sign. You_____ fish here.—Sorry, I didn’t know.

How’s your tour around the North Lake? Is it beautiful?—— It _______ be, but it is now heavily polluted.

Excuse me， sir. Could you tell me which is the way to the youth centre— Please go _______ the bridge and turn left. Then walk _______ the railway station. You’ll see its entrance on your right.

We couldn’t understand: what could ______ his sudden change of mind?

I heard that one of the middle school students diedfrom overwork.— Yes, ______ news came as ______great shock.