Select the most appropriate option to substitute the underlined segment in the given sentence. If no substitution is required, select No improvement. Hardly had he sit on the chair than it broke (a) no substitution (b) sat on the chair when (c) sat onto a chair then (d) sit in the chair when

Options

A. no substitution
B. sat on the chair when
C. sat onto a chair then
D. sit in the chair when

Answer

B

Explanation

when should be used in place of "than..