句型转换。

1. The bus is crowded,                      ? (完成反意疑问句）

2. Have they been ready?（作肯定回答）

                                                                     .

3. They were so tired that they couldn't walk anylonger.（改为同义句）

They were _         tired    _ walk anylonger.

4. They spent five years building the building.（改为同义句）

It         them five years to          the building.

5. He left after the bus came to the stop.（改为同义句）

He _    leave          the bus came to the stop.