III. Complete each sentence with a suitable word, beginning with the letter given. (1m)
1. If you want to pay a more r_ _ _ _ _ _ _ _ _ price, remember to book the tour two weeks in advance.
2. Viet Nam launched the s _ _ _ _ _ _ _ _ Vinasat 1 in April 2008.
3. Try to g_ _ _ _ the meaning of a word from the context.
4. Astronauts work in the w_ _ _ _ _ _ _ _ _ condition.
1, reasonable
2, satellite
3, guess
4, weightless