600. They are living in _________ old charming house that is painted yellow over there.
A. the B. an C. ∅ (no article) D. a
601. Some years ago, my uncle _________ a small library for poor kids in this remote mountainous area.
A. took off B. put out C. got over D. set up
602. She will be a better cook than her mother, _________?
A. will she B. doesn't she C. does she D. won't she
603. These trees _________by my father yesterday.
A. have planted B. planted C. plant D. were planted
604. Luke wishes he _________the piano well.
A. can play B. could play C. will play D. plays
605. The problem seems not to be _________as we thought.
A. most serious B. serious C. more serious D. as serious