—Andy works hard．

—So he does．He is often seen _____ heavily before his teammates have even arrived at practice．

—Andy works hard．

—So he does．He is often seen _____ heavily before his teammates have even arrived at practice．

1. A.
   to be sweated
2. B.
   sweated
3. C.
   be sweated
4. D.
   sweating

—Andy works hard．
—So he does．He is often seen _____ heavily before his teammates have even arrived at practice．