.-- This book is _________ more useful for us students.-- Yes, but it is _________ too difficult.
Under good treatment, Linda is beginning to _________ and will soon recover.
The chemistry teacher demanded that the laboratory report _________ immediately after the experiment was done.
There is somebody waiting for you, _________ I think might be one of your classmates.
_________with enough ability for the present job, Mike was not fit for it and he had to quit it.
More and more high-rise buildings have been built in big cities __________ space.