Anyone may borrow books, and it cost nothing to borrow them.

A:Anyone B:cost C:to D:them

There are two kinds of computers (there), both (of them) are (widely) (used) today.

A:there B:of them C:widely D:used

(It) is easier (to talk) about a problem (than) to solve (them).

A:It B:to talk C:than D:them

We don't consider ______ necessary for them to move into that house.

A:that B:this C:it D:them

(It) is easier (to talk) about a problem (than) to solve (them).

A:It B:to talk C:than D:them