Up until the mid-18th century, humans only _____ energies that ...

[ Grammar ]

Up until the mid-18th century, humans only _____ energies that were available on the surface of the earth such as wood and wind.

A. produced

B. depleted

C. exploited

D. promoted

Select your answer:
A B C D E

Other quiz:

Articles › View

I wanted to be ………… accountant.

A. a

B. an

C. the

D. –

Grammar › View

A：The singer ＿＿＿ come to our school this Saturday. B：How cool! He is my favorite singer. I can’t wait ＿＿＿ him.

A. is going; to see

B. will; seeing

C. will; to see

D. is going to; see

Adverbs › View

Identify the adverb of frequency in this sentence: They always go for a walk in the evening.

A. sometimes

B. rarely

C. always

D. often

Grammar - Present Perfect Tense › View

I (meet) ______________ a lot of people in the last few days.

A. met

B. am meeting

C. have met

D. have meet