－Have you finished your experiment report, Jane?－Oh, my God. I’ve _______ forgotten all about that.

 Jim went to answer the phone. _________ , Harry started to prepare lunch.

In order to save time, I will __________ mention the events that happened last night to refresh your memories before the discussion.

I thought she was famous, but none of my friends have ______heard of her.      

Although China has developed its economy greatly, its per capital GDP is still         one-tenth of the United States.