DIRECTIONS for the question:Choose the appropriate idiom/phrase from the options.
The class could not keep a straight face on hearing the strange pronunciation of the new teacher.
A)
Remain sober
B)
Remain calm
C)
Remain silent
D)
Remain indifferent
E)
Remain serious
E
Keep a straight face: a blank or serious facial expression, especially when trying not to laugh or to manage to stop yourself from smiling or laughing.
