When the American constitution ______into effect in 1789,it didn’t contain any words guaranteeing the basic rights of ordinary citizens.
| A．went | B．had gone | C．has gone | D．was going |
I don’t want to speak to her, but I ______.
| A．do | B．have to | C．have to speak | D．must to |
Hurry up, or you _____ the train.
| A．miss | B．lose | C．will miss | D．will lose |
The new library ____ next week.
| A．will build | B．will be built | C．would build | D．would be built |
---Where’s Mabel?
---She _____ ping pong behind the teaching building.
| A．is playing | B．was playing | C．played | D．had played |
Quite a few tall buildings _______ the last two years.
| A．have been put up | B．were put up | C．had put up | D．put up |