_________, I always feel I want a few more days.
A. However long is a vacation B. However long a vacation is
C. However is a vacation long D. However a vacation is long
---How do you find my composition, Mr John?
---Good, ___too many spelling mistakes. You can’t imagine what great difficulty I had ___them.
A. except, correct B. except for, to correct
C. except, correcting D. except for, correcting
He is only too ready to help others, seldom, _____, refusing them when they turn to him.
A. if not B. if ever C. if any D. if so
It is in their ability to speak ______ humans ______ from animals.
A. which; differ B. that; different C. which; different D. that; differ
Tom, look at your shirt! It requires ________.
A. washing B. washed C. to wash D. being washed
I am concerned ____ it that I can’t concentrate ____ my work because of headache.
A. of; on B. of; of C. about; on D. about; to
