网址：http://m.1010jiajiao.com/timu_id_834929[举报]
I don’t know _____ it next.
A．how to do
B．what to do
C．what can I do
D．how can I do
I don’t know _____ next.
A．how to do B．what to do C．what can I do D．how I can do
I don’t know ___ next.
A．what to do
B．how to do
C．what should I do
D．how should I do
I really don't know ________ .
[ ]
I don't know ________ to do next.
A
B
C
D