语法填空 Everyone knows that earthquakes ca

题目：

语法填空

     Everyone knows that earthquakes can damage their property.But actually, in some situations, more

damage is done after an earthquake than when it _1_(happen). However, you can do a great many things   2    an earthquake that may help to protect your home.

      Firstly, make sure there is no gas leak.The professional   3   (suggest) is to turn off the gas line if you

can.If there is a gas leak and you can't turn it off,   4   is recommended that you get everyone out of the

house  5    go to a neighbor's to call the fire department.

     Secondly, make sure none of the water pipes are broken.Even if you don't see any water leaking, you

should call the water company to see   6   the water is safe to drink.You don't want any one of your family members to get sick because he or she has drunk   7   (safe) water, right?

     The last thing you should do is   8  (make) sure the foundation of the house is not cracked or sinking.

A cracked or sinking foundation can be a sign   9   the house may collapse.In that case, leave the house

and do not enter it until  10  expert looks at the problem.