The little baby, if _________ by other people, will wake up and cry.
| A．disturbing | B．disturbed | C．to be disturbed | D．being disturbed |
.The surroundings of his house ______ clean now.
| A．is | B．are | C．was | D．Were |
.The committee ______ over the problem among themselves for two hours.
| A．has argued | B．has been arguing | C．have argued | D．have been arguing |
.The public ______ generous in their contributions to the earthquake victims.
| A．is | B．was | C．are | D．has been |
.Cattle ______ on the hillside.
| A．grazes | B．is grazing | C．was grazing | D．were grazing |
.Her politics ______ neither conservative nor liberal.
| A．is | B．are | C．was | D．has been |