The car accident happened ____ a cold winter morning. Luckily, no one was hurt.
-What do you think of my answer to the questions?-Sorry. What’s that? I______ about something else.
How long have you_________?
I became a teacher 15 years ____. I have been a teacher ____ 1997. I have taught here ___about 15 years .
Mr. Li _____Kunming . He _____ the city three times . This time he _____ Kunming for three days .
The Statue of Liberty is in __________.