单项选择题
A. How useful an B. What useful C. How useful D. What a useful
I think he hardly makes spelling mistakes, ()A. does he...
单项选择题I think he hardly makes spelling mistakes, ()
A. does he B. doesn't he C. do I D. don't I
Don' t smoke until the plane ()off.A. takesB. tookC. ha...
单项选择题Don' t smoke until the plane ()off.
A. takes B. took C. has taken D. had taken
A thief is a danger to()A. societyB. a societyC. the so...
单项选择题A thief is a danger to()
A. society B. a society C. the society D. societies
