Most of the factories under ___________ have been designed by Chinese engineers.
| A．conclusion | B．control |
| C．construction | D．contribution |
__________ with the difficulty, he doesn't know __________ to do.
| A．To face; how | B．Facing; what |
| C．Faced; what | D．Facing; what |
Many countries __________ the Third World are developing quickly
| A．belong | B．belongs |
| C．belongs to | D．belonging to |
With no central government, the island was ruled by kings，__________ a different region of the country.
| A．each controlling | B．each controlled |
| C．each to control | D．each was controlling |
-These suitcases are too heavy for me to move.
-Here, I'll give you a hand __________ them.
| A．for | B．to |
| C．with | D．by |
When he left the room, he __________ the door key to me.
| A．handed in | B．handed on |
| C．handed out | D．handed over |