Present perfect

Question 1

My teacher _____ pointed out that I need to add an object after the word like. For example, I like IT or I liked IT

Accepted Answer

has

Question 2

Breakthroughs in artificial intelligence (AI), methods ______ increased the power of education technology tools

Accepted Answer

have

Question 3

Scientists ______ found a plant that could survive the harsh conditions on Mars

Accepted Answer

have

Question 4

Research on education technology is complex. Robust, impartial evidence ____ been scarce

Accepted Answer

Has

Question 5

Companies trying to sell educational technology ______ provided a lot of the evidence related to its impact

Accepted Answer

have

Question 6

Technology’s role in education _____ sparked intense debate for a long time.

Accepted Answer

Has

Question 7

Digital skills ______ become part of a basic skills package.

Accepted Answer

have

Question 8

Carbon dioxide and other greenhouse gas emissions _____ raised temperatures

Accepted Answer

have

Question 9

Global mean sea level ______ risen about 8–9 inches (21–24 centimeters) since 1880

Accepted Answer

has

Questions 9