21.Jeniffer is worthy ________ smoking as she suffered a lot from lung problem.
A. to cut out B. of cutting out C. to be cut out D. of being cut out
22.He ________ the things in the old case which he wanted to keep.
A. left aside B. set aside C. tested out D. turned around
23.---What should I do to lose weight?
---________ more vegetables and less fat.
A. To take B. having taken C. Taking D. Take
