A.study; of whom | B.study; of them | C.studying; of them | D.studying; of whom |
A.have reached | B.reaching | C.to reach | D.to be reaching |
A.phoning | B.to phone | C.phone | D.having phoning |
A.lending | B.lend | C.to lend | D.Lent |
A.Keeping | B.To keep | C.Having kept. | D.To have kept |
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