Ifasubstanceisdissolvedinwaterorheated，itmay（）agas.
C
「句意」 如果一种物质溶解在水里或被加热，它可能释放出一种气体。
「难点」 give into 为非固定搭配; give over 意为“托付， 交托”;give off 意为 “散发”;give away 意为“送掉，分发(奖品)等”。
U.S. News ____________ rankings of colleges since 1983. They are a very popular resource for students looking to apply to university campus.
_________, the most controversial candidate in the election campaign, he has been strongly criticized for his crude comments about women.
.If you have really been studying English for so long, it’s about time you _____ able to write letters in English.