Mr. Smith，________of the ________speech，started to read a novel.
| A．tired；boring | B．tiring；bored |
| C．tired；bored | D．tiring；boring |
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 |