单项选择题
A．all B．every C．some D．any
The book is a（）for students of science. A．necessary B．m...
单项选择题The book is a（）for students of science.
A．necessary B．must C．important D．useful
Not only was she hard-working,（） A．how beautiful she wa...
单项选择题Not only was she hard-working,（）
A．how beautiful she was B．was she helpful C．but she was also polite D．what a beautiful girl
Nancy hasn't begun working on her Ph. D,（）working on he...
单项选择题Nancy hasn't begun working on her Ph. D,（）working on her master's.
A．still because she is yet B．yet as a result she is still C．yet because she is still D．still while she is already
