Only rarely ______ earthquakes occur in the United States east of the Mississippi River.

A:had B:when C:that D:do

Local newspapers’ rarely give opinions on ______.

Local newspapers rarely give opinions on ?.............

Mary rarely speaks to Susan.
　　

A:slowly B:seldom
C:weakly D:constantly

I rarely wear a raincoat because I spend most of my time in a car

A:normally B:seldom C:frequently D:usually

I {{U}}rarely{{/U}} wear a raincoat because I spend most of my time in a car.

A:normally B:continuously C:seldom D:usually

Mary {{U}}rarely{{/U}} speaks to Susan.

A:slowly B:seldom C:weakly D:constantly

Mary rarely speaks to Susan.（）

A:slowly B:seldom C:weakly D:constantly