1.Being a good leader，one ______ to think more of others.

　　A. must

　　B. may

　　C. ought

　　D. should

　　2.It‘s quite ______ me why such things have been allowed to happen.

　　A. for

　　B. behind

　　C. against

　　D. beyond

　　3.The factory manufactures a ______ of products.

　　A. variety

　　B. mixture

　　C. quality

　　D. volume

　　4.He continued speaking，regardless ______ my feelings.

　　A. in

　　B. of

　　C. on

　　D. about

　　5.If traffic problems are not solved soon，driving in this city ______ impossible.

　　A. become

　　B. becomes

　　C. will become

　　D. has become