Look, the man looks like Mr. Brown.— It ________ be him, for he ________ Australia since last Thursday and hasn’t returned.

The new exchange students don’t seem whofor help.

I don’t like this kind of cell phone. Will you show me

_______ cleaning the yard and making up the beds forthe old, we also read newspapers for them and had chats with them.

Is the White House _____ to ordinary visitors?— Of course, but you need to make an appointment ahead of time.[ ]