16．What time is it now？
A．It's 5：00 a．m．
B．It's 4：30 p．m．
C．It's 5：00 p．m．
17．Are the students having their classes now？
A．Yes，they are．
B．No，they aren't．
C．We don't know．
18．What is Jane doing？
A．She is dancing in the gym．
B．She is having a class．
C．She is singing in the music room．
19．Where is Lan Lan？
A．She is in the gym．
B．She is on the playground．
C．She is in the classroom．
20．What are the boys doing？
A．They are playing computer games．
B．They are playing football on the playground．
C．They are having a physics class．