will become - If space debris continues to accumulate, it ______ (become) harder to launch new satellites., will use - If ClearSpace-1 succeeds in its mission, scientists ______ (use) similar technology in the future., will create - If satellites crash into each other, they ______ (create) more debris., will be - If engineers do not find a solution, space exploration ______ (be) at risk., cooperate - If countries ______ (cooperate), they will be able to clean up space faster., had designed / wouldn’t have had - If engineers ______ (design) satellites differently in the past, we ______ (not have) so much space junk today., hadn’t happened / would have been - If the 2009 collision ______ (not happen), there ______ (be) fewer debris in orbit., had prepared / could have avoided - If astronauts ______ (prepare) better, they ______ (avoid) space debris threats., had launched / would have helped - If ClearSpace-1 ______ (launch) earlier, it ______ (help) reduce space junk by now., had taken / wouldn’t be - If space agencies ______ (take) action sooner, space ________ (be) so polluted.,

Conditionals Exercises

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