摘要：24．Some teenagers their health because they often expose themselves to so many electric products． A．have damaged B．are damaging C．damaged D．will damage
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Some teenagers ________ their health because they often expose themselves to so many electric products．
[ ]
A．
have damaged
B．
are damaging
C．
damaged
D．
will damage
Some teenagers ________ their health because they often expose themselves to so many electric products．
[ ]
A．
have damaged
B．
are damaging
C．
damaged
D．
will damage
Some teenagers _______ their health because they often expose themselves to so many electric products.
| A．have damaged | B．are damaging | C．damaged | D．will damage |