Most whales must come up for air afterseveral minutes, _______ a few can stay under water for an hour or more.

Thanks for listening to my problem andgiving me your advice, Amy.—_________. That’s what friends arefor.

________, they have been struggling against the snowstorm for ten hours.[ ]

There aren’t many seats left for the play; you had better make sure that you two today

187 Yesterday we had a long meetingwhichfour hours