－Surely you can turn to David for help.
－_______ He is the last one you can rely on.
| A．Get out of it! | B．Is that right? | C．I couldn’t agree more. | D．It’s up to you. |
If the horse won today，it__________thirty races in five years.
| A．would have won | B．won |
| C．must have won | D．did have won |
If I were you,I__________ his offer.
| A．would accept | B．accepted |
| C．will accept | D．can accept |
Look at the terrible situation I am in! If only I__________your advice.
| A．follow | B．would follow |
| C．had followed | D．have followed |
—Where is Jack?I can’t find him anywhere.
—He__________ his homework upstairs.
| A．might have done | B．must have done |
| C．must be doing | D．must do |
I don’t know why he is late.
—Nor do I.He__________an accident.
| A．could have had | B．should have had |
| C．might have had | D．must have had |