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 |
. --- ____ for the tree tickets，I would not have gone to the film so often.
| A．If it is not | B．Were it not | C．Had it not been | D．If they were not |
--- ___it rain tomorrow， we would have put off the visit to the Yangpu Bridge.
| A．Were | B．Should | C．Would | D．Will |
He is the only one of the students who _________ a winner of scholarship for 3 years.
| A．is | B．are | C．have been | D．has been |
Parents ____ bring up their children under 16 and educate them properly.
| A．could | B．may | C．might | D．ought to |
All of us found _____ necessary to learn a foreign language.
| A．this | B．that | C．it | D．what |