Imanagedtoforceasmileas they wereleaving.
"No, no, it didn'tworryme at all," he said,forcingalaugh.
It was aprettylamejoke, to behonest, but Imanagedtoforcealaugh.
Irememberforcingasmilewhen all Iwantedto do wascry.
Eventually sheforcedasmilefor thecamerasand washelpedinto thecar.
See alsoforceverb(GIVE NO CHOICE)