______ I admit that all these problems are difficult, I don’t agree that they can’t be solved.
A. Unless B. While C. Until D. Since
Clothing made of man-made fibers has certain advantages over _______ made of natural fibers like cotton, wool or silk.
A. the ones B. one C. that D. what
Believe it or not, I am sure that is _______ people call the sixth sense.
A. what B. that C. which D. how
One’s being _______ plays an important role in building up interpersonal relations, while some rudeness will surely leave a bad impression.
A. respected B. respectful C. respectable D. respect
There must have been something wrong with the society _______ no one offers to help those who are in trouble.
A. when B. where C. which D. that
The number of traffic accidents caused by drunk driving is _______ as the number of those caused by other reasons.
A. twice as many B. twice as large C. as twice large D. many as twice
