Question

There ________ no water for 2 days, the travellers were all thirsty

1. A.
   having been
2. B.
   had been
3. C.
   is
4. D.
   was

Answer 1

A
考查独立主格结构。前后主语不一致。句意：因为两天没有水了，旅游者们都很渴。根据语境应用现在分词having been 作状语，表示原因。故选A。