Question

Biologists tell us that the earth has seen 500 million species of animals ....... or so.

A. during the last 3 billion years

B. it was during the last 3 billion years

C. while the last 3 billion years

D. since the last 3 billion years

Answer 1

Biologists tell us that the earth has seen 500 million species of animals ....... or so.

A. during the last 3 billion years

B. it was during the last 3 billion years

C. while the last 3 billion years

D. since the last 3 billion years

Chúc bạn hok tốt~~~~

Answer 2

Biologists tell us that the earth has seen 500 million species of animals ....... or so.

A. during the last 3 billion years

B. it was during the last 3 billion years

C. while the last 3 billion years

D. since the last 3 billion years

Answer 3

Đáp án:

Biologists tell us that the earth has seen 500 million species of animals ....... or so.

A. during the last 3 billion years

B. it was during the last 3 billion years

C. while the last 3 billion years

D. since the last 3 billion years

Chúc học tốt!!!