1 . At the beginning the mood of the meeting was ________ but it turned ________ when the extent of the problem became known.

A．cheerful; serious	B．cheerfully; seriously
C．cheerfully; serious	D．cheerful; seriously

2 . It’s a_________ idea to build cabin hospitals (方舱医院) to receive patients during the outbreak of COVID-19 (新冠肺炎).

A．convenient

B．cheerful

C．creative

D．curious