问题
选择题
Look! Who ___________ on the blackboard?
A．writes
B．is writing
C．are writing
D．writing
答案
答案：B
根据look可判断本题的时态为现在进行时，故选B
搜题请搜索小程序“爱下问搜题”
Look! Who ___________ on the blackboard?
A．writes
B．is writing
C．are writing
D．writing
答案：B
根据look可判断本题的时态为现在进行时，故选B