The boy said ___ couldn't he work out the problem but his teacher didn't know how to do it.
| A．though | B．never | C．hardly | D．not only |
There are over 58, 000 rocky objects in __________ space, about 900 of which could fall down onto __________ earth.
| A．the; the | B．/; the |
| C．the; / | D．a; the |
Experts think that __________ recently discovered painting may be __________ Picasso.
| A．the; / | B．a; the |
| C．a; / | D．the; a |
I woke up with __________ bad headache, yet by __________ evening the pain had gone.
| A．the; the | B．the; an |
| C．a; the | D．a; an |
As is known to all, __________ People's Republic of China is __________ biggest developing country in the world.
| A．the; / | B．the; the |
| C．/; the | D．/；/ |
There is no __________ swimming-pool in this school and the students often go to swim __________.
| A．indoors; outdoors | B．indoor; outdoor |
| C．indoor; outdoors | D．indoor; indoors |