If you don’t want to misunderstand in the language communication, you’d better ____________ eye contact with one who is talking to you.

His writing is so confusing that it’s difficult to make out ________ it is he is trying to express.(2011·安徽，33)

With such hehcircumstances so as not to _______ each other’s cars.

We will have a meeting the morning September 8th .

All the buildings look old but thelibrary _________.