—Which country has the_____population in the world?
—China.
| A．smallest | B．most |
| C．largest | D．large |
I remember Susan left _______ a very cold morning of January.
| A．in | B．on | C．at | D．from |
He is only _______ boy. He isn’t old enough to take care of himself.
| A．a 8-year-old | B．an 8-year-old |
| C．a 8-years-old | D．an 8-years-old |
--- ____ do you study for tests?
---I study math by ____ lots of exercises.
| A．How, doing | B．How, do |
| C．When, do | D．What, doing |
Let’s take ______ photo! Everyone, cheese!
| A．a | B．an | C．the | D．不填 |
— ____ your mom ____ Tom?
— No, she ____.
| A．Do ；know ；doesn't | B．Does ；know ；doesn't |
| C．Do ；knows ；do | D．Does ；know ；don't |