162. Many countries are increasing their use of natural gas, wind and other forms of ______.
He _____ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside.
I ______ have been more than six years old when the accident happened.
--Where have you been? --I in the heavy traffic. Otherwise I here earlier.
I forget where I read the article, or I _____ it to you now.
一“It looks as if he were drunk.” “So it does. _____.”