There __________ a big lake near my house. But it’s gone now.–That’s too bad.

How foolish I was!— ________ you have realized that，stop blaming yourself

Mr. Smith was _______ of the _________ speech.

Tom woke up late and left home without breakfast, _____ another long and boring day at school. [ ]

It is said that over 50 percent of China’s population _________ working in the cities in 2013, so there are fewer and fewer people on the farm now.