A. worried B. eager C. pleased D. sorry
A. 生理性流涎 B. 疱疹性口腔炎 C. 溃疡性口腔炎 D. 鹅口疮 E. 单纯性口腔炎
A. as well B. as well as C. as good as D. as a result
A. In addition B. In contrast C. For example D. At any rate