We don't know how did the thief made an escape.

The small child does whatever his father was done.

A. has done

B. did

C. does

D. had done

E. No correction required

You need not come unless you want to.

A. You don't need to come unless you want to

B. You come only when you want to

C. You come unless you don't want to

D. You needn't come until you don't want to

E. No correction required

There are not many men who are so famous that they are frequently referred to by their short names only

A. initials

B. signatures

C. pictures

D. middle names

E. No correction required

The man to who I sold my house was a cheat.

A. to whom I sell

B. to who I sell

C. who was sold to

D. to whom I sold

E. No correction required