So sudden ________ that the enemy had no time to escape.
| A．did the attack | B．the attack did | C．was the attack | D．the attack was |
The new books ________ in the factory these days are mainly intended for children.
| A．printing | B．to print |
| C．being printed | D．to be printed |
________ the English speech competition will be a lot of work, so I need some volunteers to help out.
| A．Organize | B．Organized |
| C．Organizing | D．Being organized |
If water becomes increasingly scarce in decades ________， water shortage will become a hot issue all over the world.
| A．coming | B．having come |
| C．to come | D．to be coming |
Misunderstandings ________ from lack of social communication, unless ________ properly, may lead to serious problems.
| A．arisen; handling | B．arising; handled |
| C．rising; handled | D．risen; handling |
________ enough money, Li Hua was unable to buy the new house.
| A．Not saved | B．Not having saved |
| C．Not to save | D．Not saving |