John, you shouldn’t think ________ about yourself.–Sorry, Mr Black. I’m really __________ selfish. But I’ll try to think more about others.

I don’t think they would believe her, _________

So you didn’t say “hello” to him last night?一Well，I stopped and smiled when I saw him，but he _______me and walked on

Did you find the missing couple in the mountainyesterday—No, but we ______ to get in touch with them eversince.

The number ofchildren who have lost parents to AIDS ___ to rise to over 26 million in 2011.