下列各句，没有错别字的一项是： （ ）

He moved away from his parents and missed them ________enjoy the exciting life in China

When you go outing with your sisters, you must see to ________ that they are safe.[ ]

How can I get some ______ about the 2016 Olympic Games—Why not search the Internet

____ the pressurefrom work, they have to deal with psychological problemscaused by the relationship among colleagues[ ]