Теория:
Study Vv, Ww, Xx.
Listen and repeat (Слушай и повторяй).
Vv
vegetable [‘veʤ(ə)təbl] – овощ
Ww
watermelon [‘wɔ: təˌmelən] – арбуз 
Xx
X-ray [‘eksreɪ] – рентгеновский снимок
Источники:
http://newsfirst.lk/english/tag/vegetables
http://www.livescience.com/46019-watermelon-nutrition.html
http://pulsemedicalimaging.com.au/x-ray/
http://www.livescience.com/46019-watermelon-nutrition.html
http://pulsemedicalimaging.com.au/x-ray/