1、______, he talks a lot about his favorite singers after class.

　　A.A quiet student as he may be　　B.Quiet student as he may be

　　C.Be a quiet student as he may　　D.Quiet as he may be a student

　　2、Nobody but Jane ______ the secret.

　　A.know　　B.knows　　C.have know　　D.is

　　3、She apologized for ______ to attend the meeting.

　　A.her being not able　　B.her to be not able

　　C.her not to be able　　　D.her not being able

　　4、______ you were busy, I wouldn't have bothered you with my questions.

　　A.If I realized　　B.Had I realized

　　C.Did I have realized that　　D.As I realized

　　5、There are many kinds of metals, ______.

　　A.each having its special properties

　　B.having its special properties

　　C.one has its special properties

　　D.each has its special properties

　参考答案：

　　1、B　2、B　3、D　4、B　5、A