I request that you __________ the task on time.

I suggested to my father that we ____________ to Dalian for a holiday this summer, but the expression on his face suggested that he ___________ to it.

 The result was disappointing－we ______ have won the game easily.

(2013·陕西师大附中模拟)If we had taken such effective measures much earlier, the river ________ so seriously now.

 I didn’t see her in the meeting room this morning. She ______ have spoken at the meeting.