大雨过后蚯蚓常常爬到地面上，影响蚯蚓生活的因素是[ ]

A．温度

B．空气

C．水分

D．阳光

The visitors ____ that they ____ very glad to visit our company. [ ]

A. said; were

B. said; had been

C. told; were

D. said; are