留学知识库
You _____go and ask him,but he ____answer you.
Though I’ve never seen you before,Iguess you _____be the new secretary.
A foreigh language like English is difficult to learn ,so you _____work too hard.
tan(a b)=3,tan(a-b)=5.则tan2a的值是多少？
No one who had seen him work in the laboratory_____that Thomas has great capabilities for research.
Tom_____better than to ask Dick for help.
I didn’t send outmy application form last week,but_____.
