He didn’t succeed overnight. On the contrary, it was many years ______ his career took off.
A. since B. that C. before D. after
I’m really tired of Tom because he ______ keep asking silly questions.
A. can B. will C. must D. would
What you learn today ______ of practical use when you hunt for a job.
A. is proved B. proves C. will be proved D. will prove
______ the danger ahead on the railway line, he decided to go to Beijing by plane instead.
A. Having been informed of B. Having informed of
C. To be informed of D. Informing of
My parents, without ______ help I wouldn’t have become who I am, have taught me the true meaning of life.
A. whom B. their C. whose D. them
_ properly, a car can be used for many years.
A. Maintained B. Maintaining
C. To be maintained D. To maintain
