Food safety is ______ important, so the government spares no efforts to prevent food pollution.
| A．strongly | B．reasonably | C．highly | D．naturally |
of the speech, he took out his novel to read.
| A．Tires; tired. | B．Tired; tires |
| C．Tired; tiring | D．Tiring; tired |
At the end of last class, the English teacher requested that the homework this morning.
| A．handed in. | B．be handed in |
| C．would be handed in. | D．had handed in. |
A number of methods been used, but the number of animals still small in the forest.
| A．have; is | B．has; is |
| C．have; are | D．has; are |
If ,the experiment will be successful.
| A．do carefully. | B．did carefully. |
| C．carefully done. | D．doing carefully. |
such heavy pollution already, It may now be too late to clean up the river.
| A．Suffering. | B．Having suffered. | C．To suffer. | D．Suffered. |