these teams.which( )twenty experienced workers.are working h

these teams.which( )twenty experienced workers.are working hard here to( )the time they have lost
before.
a.are made up of;make up of b.are made up of;make up for
c.make up;make up for d.make up for;make up

答案为b.
be made up of...由.组成的.
make up for ,弥补.
your class is made up of 40 students.
you should make up for your mistake.

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