Are Sam and Dave very strange? They must dance in the mountains. They eat shrimp carefully. I enjoy eating shrimp. Alice&nbsp; eats shrimp very quietly. Does Alice&nbsp; frequently study English in front of the bank? I have studied English under the bridge twice. Mrs. Baker&nbsp; was afraid to dig a hole behind the building. Did Mrs. Baker&nbsp; dig a hole?<br /><br />Ms. Smith&nbsp; studied English for three hours a few weeks ago...