Complete each sentence with the appropriate form of the word in parentheses.

The existing technology of mass production is too expensive and _________. (efficiency)

Various factors which (25)__________ excessive rain, rapid snow or ice melting, and coastal storms contribute to floods

Read the passage and choose the letter A, B, C or D to indicate the correct answer to each of the following questions.

 What does the passage emphasize about travel?

Choose the word which has the underlined part pronounced differently from the rest.

Choose the word which has the underlined part pronounced differently from the rest.

Choose the letter A, B, C, or D to show the underlined part that needs correcting.

We will protect the environment if we didn't throw trash into the water.

Choose the word which has the underlined part pronounced differently from the rest.

Choose the correct answer among A, B, C or D that best fits the space in each of the following sentences.

 I'll wait for her here _________ it stops raining.