They were very impolite to the conductor, ____, of course, made things even worse.
| A．who | B．whom |
| C．which | D．what |
It was not until the 1960s and 1970s archaeologists made real progress in understanding the script.
| A．when | B．which | C．how | D．that |
The couple are at the same age, but, the husband looks much older than his wife.
| A．in addition | B．in reality | C．in contrast | D．in detail |
After so many hardships, the scientist his motherland at last.
| A．set on his foot | B．set foot on | C．set feet on | D．set his feet on |
Sarah pretended to be cheerful, nothing about the argument.
| A．says | B．said | C．to say | D．saying |
Some forms of algae have to growing on ice.
| A．adopt | B．adapt | C．advocate | D．addict |