Drought is a condition that become (17)___________ the average rain fall for fertile area drops far below the normal amount for a long period of time. In areas which are not irrigated, the lack of (18)___________ causes farm crops to death. Higher than normal temperatures usually accompany period (19)___________ drought. They add to the crop damage. Forest fires start (20)___________ during drought. The soil of a drought area becomes dry and crumbles. Often the rich topsoil is blown away by the hot, dry (21)___________. Streams, ponds, and wells often dry up during a drought, and animals suffer and may even dies because of the lack of (22)___________.

17.    A. when                             B. where                            C. what                              D. who
18.    A. wind                             B. rain                                C. fog                                D. storm
19.    A. in                                   B. at                                   C. on                                  D. of
20.    A. difficulty                      B. easily                             C. hardly                           D. quickly
21.    A. winds                            B. rains                              C. fogs                               D. storms
22.    A. air                                  B. steam                             C. wind                             D. water

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