10.______,he had to stay at home lying in bed.
A.Been ill B.Having been ill
C.Being ill D.He was ill
4.Bell is considered______the telephone.
A.inventing B.to invent
C.to be invented D.to have invented
10.______,he had to stay at home lying in bed.
A.Been ill B.Having been ill
C.Being ill D.He was ill
4.Bell is considered______the telephone.
A.inventing B.to invent
C.to be invented D.to have invented