---I wonder how much you charge for your services.
---The first two are free _____ the third costs $ 30.
A. while B. wherever
C. whatever D. whoever
_________ a reply, he decided to write another letter to the personal manager about his job application.
A. Not receiving B. Receiving not
C. Not having received D. Having not received
A bright idea suddenly struck me _____ I could use the money I saved to help a poor student in the countryside.
A. whether B. which C. that D. what
Mary quickly closed the door of her room _________ her father could reach it to keep him out.
A. before B. when C. as D. while
The four Twilight books, the first of which ____ in 2005, have set records as the biggest selling novel in USA.
A. turned out B. come out
C. stood out D. made out
---The fog in your city must have been very thick; if not, you would have been here as scheduled.
---Yes. Our flight _________ by the thick fog.
A. has put off B. was put off
C. had been put off D. put off
