–Do you know his number?
-No, I even have quite enough trouble______ my own.
A. remember B. to remember
C. remembered D. remembering
The bus stopped at the station, _____ several people and drove off.
A. pulled up B. picked up C. took up D. put up
The _____ you study, the _____ you’ll be in it.
A. hard; interested
B. harder; interesting
C. harder; more interested
D. hardest; more interested
You’d better go there by train. The train ticket is _____ the plane ticket.
A. as cheap three times as
B. as three times cheap as
C. three times cheaper than
D. cheaper three times than
She brought with her three friends, none of _____ I had ever met before.
A. them B. who C. whom D. these
_______ ambassador who did his best to prevent the war is of _______ benefit to the place.
A. An; 不填 B. The; a
C. The; 不填 D.An; a