1. The secretary of (MINE) is so efficient that (SHE) always amazes ( MYSELF) with (HER) speed.
⇒ herself
2. We (were) (made) (learning) fifty new words (every week).
⇒ to learn
3. (Both) cattle (or) railroads helped (build) (the city of Chicago).
⇒ and
4. The letter ( was sent) by (special delivery) (must be) (important).
⇒ Bỏ was
5. Suzy (had) better (to change) her study habits if she (hopes to be admitted) (to) a good university.
⇒ Bỏ to