The production of different kinds of artificial materials ____________ essential to the conservation of our natural resources.

Researchers have discovered 2,000 types of new plants but also say                                are at risk.

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

We have to take on extra staff to deal with the increased workload.

Therapists are currently using mental imagery in the hope that                                 in the treatment of cancer.

Susie and Fran _____________us last night, so I had to quickly defrost a pizza.

I think you need to ______________your ideas more clearly so that the reader doesn’t get confused.

Elephants ____________ the ecosystems they live in, and make it possible for a lot of other species to survive in those environments as well.

With only two days of____________negotiating time left, hope of progress was quickly evaporating at the climate talks.