1. work up ⇒ work out ( tìm ra )
2. grow out ⇒ grow up ( lớn lên )
3. √ ( look forward to v-ing )
4. keep up to ⇒ keep up with
5. close up ⇒ close down ( đóng cửa )
6. make sure about⇒make sure of ( chắc chắn )
7.√
8. √
9. getting rid ⇒ getting rid of
10. see through ⇒ look through ( nhìn thoáng qua )