It _______ law for some people to let the children who are not old enough ____ in the factories for them.

Let’s dress up _____ a ghost. —OK, you can dress up _____ white.[ ]

____rich and strong!

I find __________ very difficult to learn English well .

Do you have the news about Anna?—I was told she had gone abroad on June 15th, but I don’t know whether she is there now.