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.

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

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

 Remember to turn off the lights before leaving _________.

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?

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.

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