单选题You can't be______careful in making the decision
单选题A person's calorie requirements vary______his
单选题She asked the worker how long______to build the
单选题By the end of the year all but two people ______.
单选题It is better to die on one's feet
单选题Since both he and I work in the same hospital, I
单选题I______to the radio when you rang the bell the
单选题They are going to have the serviceman______ an
单选题______is inconceivable that the boy might have
单选题He was ashamed______to pass the exam.
单选题The second book was ______ by August 1952, but
单选题Each and every difference______contradiction.
单选题Things might have been much worse if the
单选题She never regretted paying $ 200 for the bookcase
单选题______for your laziness, you could have finished
单选题The vocabulary and grammatical differences
单选题The new computer virus______, the system was
单选题His first question was______Tom had arrived yet.
单选题______the way, we set off on foot into the dark
单选题Whenever work is being done, energy______from