Choose the alternative that best and respectively completes the blanks in the text.
In "…airport tower controllers (or terminal controllers) watch over all planes traveling through the airport's airspace," (lines 10 - 12 ), "watch over" means:
The only word(s) that could NOT replace "nears" in "As the plane nears the runway" (line 30) is(are):
Mark the only option in which the word(s) in bold type express(es) an idea of hypothesis/condition.

In "It helps a pilot that is in a very stressful situation to have a calm voice on the other end of the radio." (lines 9-10), "have" could be replaced by:
READ TEXT I AND ANSWER QUESTIONS 16 TO 20:

next in "its next big energy bet" indicates:
READ TEXT II AND ANSWER QUESTIONS 21 TO 30:

The underlined word in "children gather to paint and draw" (l.1) can be replaced by:
READ TEXT II AND ANSWER QUESTIONS 21 TO 30:

main in "the main downtown shopping street" (l.2) means:
READ TEXT II AND ANSWER QUESTIONS 21 TO 30:

"a key victory" (l.4) means that the victory is:
READ TEXT II AND ANSWER QUESTIONS 21 TO 30:

When we say that a war is "ongoing" (l.4), we mean it is: