Students should form the habit of ____ everything important in class. Which of the following can’t be put in the blank?
It was not until the 1960s and 1970s archaeologists made real progress in understanding the script.
The couple are at the same age, but, the husband looks much older than his wife.
After so many hardships, the scientist his motherland at last.
Sarah pretended to be cheerful, nothing about the argument.
Some forms of algae have to growing on ice.