They eat only plant foods, and take care to ________ animal products from other areas of their lives.
查语音辨析series
feast
insurance
exist
oxygen
Our teacher looked here and there on our playground _______ looking for something.
Progress so far has been very good._________ , we are sure that the project will be completed on time.
Only then _______ how much damage had been caused.
The gentleman __________ to the beautiful lady was trying to persuade her into acting in his new film.