This power could be provided by the Sun. One percent of the solar energy that reaches the Earth is enough to provide power for the (30) _________ population.

 Choose the best option A, B, C or D to complete the sentence:

 Remember to turn off the lights before leaving _________.

___________ for work early, he could have caught the bus.

The cost of living in Vietnam is low compared _________ Singapore.

In a few years’ time, our houses will be _________ by solar energy.

Television is an _________ means of communication.

There is a _________ faucet in your kitchen.

Choose the, word or phrase (A, B, C or D) that best fits the blank space in the following passage:

Are you looking for a cheap, clean, effective (28) _________ of power that doesn’t cause pollution or waste natural resources? Look no further than solar energy (29) _________ our Sun.

This power could be provided by the Sun. One percent of the solar energy that reaches the Earth is enough to provide power for the (30) _________ population.

Many countries are already using solar energy. Solar panels are placed on the roofs of a house and the Sun’s energy is used (31) _________ water. The energy can be stored for a number of days; so on (32) _________ days you can use solar energy, too.

These (A) televisions are all too expensive (B) for we (C) to buy at this time (D).

It was raining hard, _________ .

Choose the word whose underlined part is pronounced differently from that of the other words:

_________ to school by public bus?

"Don't forget to do your homework", the teacher told us.

Choose the word whose underlined part is pronounced differently from that of the other words:

Choose the best sentence:

“Don’t stay up too late, my son”, he said.