Nhận biết (M1)

From 2009 to 2019, flying out of major urban airports __________ to increase in popularity. For example, Chicago Midway International Airport in Chicago, Illinois, saw a 22.2 percent increase in departing passengers, from 8,252,347 total passengers in 2009 to 10,080,385 in 2019.

Which choice completes the text so that it conforms to the conventions of Standard English?

• A.

  to have continued

• B.

  continued

• C.

  continuing

• D.

  continue