The chief manager has decided to put _______ he thinks is energetic,  clever, and has good qualities in the position of the leadership of the company.

I wanted to buy a comic book , but there was      in the bookshop.

 Space exploration is something that China has done to create jobs in a high-tech industry, to show “______ don't just make cheap clothes”.

September 8th，1931 is a special day，________, I think，that will be remembered by the Chinese forever. 

Teenagers are warned to be careful when making friends online, because when you can’t see a person, they could be __________.