Put the words in the correct column depending on the pronunciation

----- Nội dung ảnh -----
Exercise 1. Put the words in the correct column depending on the pronunciation.

| /uː/ | /ʊ/ |
|--------------|-----------|
| honeymoon | issue |
| understood | bush |
| cookie | blew |
| fruit | grew |
| youth | wooden |
| mood | rude |
| | hook |
| | took |
| | childhood |
| | pullover |
| | prove |