I left my pen on the desk and now it’s gone; who ________ it?

Someone has tidied the sitting room!—Jim __ it this morning; he couldn’t bear the mess anymore．

Judging from his _____ look, he has found the key to _____the difficult problem. [ ]

Great changes have taken place in that school. It is no longer it was 20 years ago,it was so poorly equipped.

He is too pessimistic! I can’t _____ hispessimistic view of the state of the economy