derstandings ________ from lack of social communication, unless ________ properly, may lead to serious problems.

The coin, which ______ the 1920, ______.

Do you have any plans for this weekend— I am not sure. I ________ go to visit my grandmother.

The _____ girl was last seen _____ flowers near the river. [ ]

It is reported that China will not buy the Euro debt until some thorough research ______