Hurriedly, they packed their belonging and set off ______the direction of the river．
| A．for | B．to | C．at | D．in |
A serious study of physics is impossible________some knowledge of mathematics.
| A．against | B．before |
| C．beyond | D．without |
It was a real race________time to get the project done.Luckily，we made it.
| A．over | B．by |
| C．for | D．against |
Let those in need________that we will go all out to help them.
| A．to understand | B．understand |
| C．understanding | D．understood |
Shortly after suffering from a massive earthquake and ________to ruins，the city took on a new look.
| A．reducing | B．reduced |
| C．being reduced | D．having reduced |
________ basic firstaid techniques will help you respond quickly to emergencies.
| A．Known | B．Having known |
| C．Knowing | D．Being known |