下列各句中，表达得体的一句是（ ）

It shouldn’t take long to clear up after the get-together if we allvolunteer to help . —– I quite agree with you . _____________.

May I speak to your manager at four o’clockthis afternoon–I’m sorry. He ________ to a conference long beforethen.

It is difficult to judge whether what he said_________

The manager discussed the plan that they would like to see ______ the next year