| There are __________ units in Book Ⅲ. The __________ unit is the most interesting. |
A. nineteen; ninth B. ninteen; ninth C. nineteen; nineth D. ninteen; nineth |
| July comes after ________ and before _________. |
A. May; June B. June; August C. April; May D. August; October |
| —When is your birthday? —My birthday is __________. |
A. fifteen May B. October ten C. August fiveth D. March fourth |
| The boy is only ________. Today is his ________ birthday. |
|
| Teenagers should learn to protect ______ from all kinds of danger. |
A. them B. they C. their D. themselves |