Question

I supported him in time , otherwise he         off the bike .

A．might fall	B．would fall
C．should have fallen	D．would have fallen

Answer 1

D

otherwise 否则，相当于if not。本句可改为： if I hadn’t supported him in time, he ___off the bike。显然，这是与过去事实相反，主句应用would/could…+have done。故选D。