Solar energy is not only plentiful but also infinite.
A. without limit B. boundless C. limited D. indefinite

In remote communities, it's important to replenish stocks before the winter sets in.
A. empty B. refill C. repeat D. remake

There has been no discernible improvement in the noise levels since lorries were banned.
A. insignificant B. clear C. obvious D. thin

My cousin tends to look on the bright side in any circumstance.
A. be optimistic B. be pessimistic C. be confident D. be smart

It was apparent from her face that she was really upset.
A. obvious B. indistinct C. transparent D. evident

In some countries, the disease burden could be prevented through environmental improvements.
A. something to stiffer B. something enjoyable
C. something sad D. something to entertain

Population growth rates vary among regions and even among countries within the same region.
A. restrain B. stay unchanged C. remain unstable D. fluctuate

Her father likes the head cabbage rare.
A. over-boiled B. precious C. scarce D. scare

He decided not to buy the fake watch and wait until he had more money.
A. authentic B. forger C. faulty D. original

The plane landed safely.
A. touched down B. took off C. Both A and B D. Neither A nor B