park is very close, so you can walkthere.

When will the problem be settled? —Be patient! The person _______ will see to it as soon as possible

We should produce less things from raw materials, _____ is growing smaller and smaller.

turned to the person ________ next to me, Irecognized that he was my schoolmate.

_______nearly all behavior is learned behavior is a basic assumption ________has been put forward by the social scientists.