The school had promised to keep parents fully _____ about the conditions of their children at school.
| A．inform | B．informing |
| C．informed | D．being informed |
________ it rain tomorrow, we should have to put off the visit to the Yangpu Bridge.
| A．Were | B．Should |
| C．Would | D．Will |
________ anyone come to my office, please tell them I'm not available before four o’clock.
| A．Might | B．Could |
| C．Would | D．Should |
Had he not come an hour earlier, he＿＿＿the secret that his mother was always there.
| A．must never find | B．must never have found |
| C．would never find | D．would never have found |
---- What do you think of a house supplied by Lovell ?
---- _______ you buy a home from Lovell, the company promises to buy it back at the same price after three years.
| A．Should | B．Must |
| C．Could | D．Would |
Had the government limited the sales of cars much earlier, traffic jam and pollution _______so serious now．
| A．has not been | B．would not be |
| C．had not been | D．wouldn't have been |