* Give the correct form of the words in brackets to complete the sentences.
01. Tuan was an effective ……………………in that volunteer programme. (actor)
02. I watch the news every day because it’s very ……………………. (inform)
03. He didn't feel happy because he worked ……………………. (successful)
04. We are talking about the preservation of ……………………resources. (naturalize)
05. Many chemicals have a ……………………effect on the environment. (disaster)
* Give the correct form of the verb in bracket.
01. If it (not / rain) ………………………, we will go to the movies.
02. Gold (discover) ………………………in California in the 19th century.
03. A large number of fishermen (kill) ………………………when the storm struck.
04. Unless I have a quiet room, I (not / be) ………………………able to do any work.
05. We saw three houses, the roof of which (blow) ………………………off in the storm.