443. People all over the world should work together; no ____country can save the environment.

A. alone　　 B. single　　 C. lonely　　 D. one

442. My companions are not used to _______-.

A. drinking strong　　　　　 B. drink strong

C. strong drink　　　　　　 D. strong drinking

441. _______ we shall be able to defend the camp or not is another matter.

A. Whether　　 B. If　　 C. What　　 D. That

440. _________, she was now dressed up for the party.

A. Taking a shower　　　　　　　 B. Having taken a shower

C. She took a shower　　　　　　　 D. Taken a shower

439. _____ two years to ________after the sick woman, she badly needed a holiday.

A. Devoting herself; look　　　　　 B. Devoted; looking

C. Devoting; looking　　　　　　 D. Devoted; looked

438. ______her education, she was anxious to find a job.

A. Finishing　　　　　　　　 B. Finished

C. Having finished　　　　　　 D. Being finished

437. I have no idea ______ children starved to death in northern Africa .

A. how much　　 B. what　　 C. where　　 D. how many

436. The reason ______ the accident occurred is still unknown.

A. why　　 B. what　 C. how　　 D. which

435. __________, they managed to escape in a boat.

　 A. Defeated and alive　　　　　　　 B. Defeating but alive

　 C. Defeated but alive　　　　　　　 D. Defeated and alive

434. They saw a lady beautifully ________.

A. dressed　　 B. dressing　　 C. being dressed　　 D. well dressing