postage
| A．challenge | B．photograph | C．greedy | D．goods |
Not a single word ____ last night.
| A．he said | B．said he | C．did he say | D．had he said |
Hardly ____ into the country ____ it began to rain.
| A． we had got; when | B．we got; than |
| C． had we got; when | D．did we get; than |
It is I ____ singing in the garden.
| A．who are | B．who is | C．that am | D．that is |
It was ____ the old worker came that we ____ the experiment.
| A．until; didn’t begin | B．not until; began |
| C．until; began | D．not until; didn’t begin |
____ be careful when crossing the street!
| A．Must | B．Should | C．Ought to | D．Do |