ALTERNATIVE SOURCES OF ENERGY HAVE ENVIRONMENTAL ADVANTAGES. IT’S NOT...

Câu 35:

Alternative sources of energy have environmental advantages. It’s not easy to make full use of

them.

A.

Because alternative sources of energy have environmental advantages, it’s not easy to make

full use of them.

B.

Alternative sources of energy have environmental advantages, so it’s not easy to make full use of

C.

Despite their environmental advantages, it’s not easy to make full use of alternative sources of

energy.

D.

Although alternative sources of energy have environmental advantages, but it’s not easy to make