Jenny worked hard before the final examination，and it_______．She got an A．
A．showed off B．paid off C．put off D．took off
All the things __________ must be done well．
A. worth to do B. worthy of being done
C. worthy doing D. worth of doing
Follow your doctor’s advice,_____ your cough will get worse.
A.or B. and C. then D. so
I spent five hours_____________ the book__________ I paid 10 dollars.
A. reading; that B. to read; for that C. read; which D. reading; for which
When the old man _______to walk back to his house，the sun________itself behind the mountain．
A．was starting；hid B．had started；had already hidden
C．had started；was hiding D．started；had already hidden
I wrote a letter of complaint(投诉)，and the airline have promised to _______the matter．
A．1ook at． B．1ook into C．1ook after D．1ook out
