Question

—How long have you been going to work on foot?
—Since last month when I ________ from a heart attack.

A．recovered	B．have recovered
C．was recovering	D．would recover

Answer 1

A

A 考察动词时态。句义：你步行上班已经多长时间了？—自上个月我心脏病康复开始。Last month是时间点，应该与过去时连用。故A正确。