Animals do different amazing things to __________ low temperatures when winter comes. Some head for warmer places, while others put on a thick coat of fur.
| A．treat | B．prevent |
| C．survive | D．simplify |
When the police arrived, the crowd made off _____ all directions.
| A．in | B．to | C．at | D．for |
Recently, employees at the Shanghai Metro’s Railway Station Stop have been busy learning dialects from other parts of the country, ___________ aims to provide better service to travelers from outside the city.
| A．where | B．that | C．which | D．it |
Professor Smith, along with his assistants, ________ on the project day and night to meet the deadline.
| A．work | B．working | C．are working | D．is working |
________ your composition carefully, some spelling mistakes can be avoided.
| A．Having checked | B．Check | C．If you check | D．To check |
It remains doubtful whether the project _____________ next month will bring profits to the company.
| A．accomplished | B．to be accomplished |
| C．having accomplished | D．being accomplished |