20.—Is that Dec. 21, 2012 is the end of the world true? —Definitely not, but________must be paid to the global climate change.
It was a nice meal, _____ a little expensive.
As he approached ______ front door, Jack saw ______ strange sight.
I had promised to send him an email_______ I got home but I was so busy that I forgot to do so .
----Did you forget about my birthday? ---- _____ I’ve booked a table at Jinghao restaurant for this evening.
The government has taken measures to___the high prices of daily goods to keep the market stable.