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”。
AlthoughSPanish，heattendedthecourse.
We can hear （）from the back of the room.
“What courses are you going to do next semester”
“I don ’t know. But it’s about time _____ on something.”
Mary tiptoed over and took the clock away because she hated to hear it（） when she was trying to go to sleep.