根据括号中所给的汉语写出单词，使句子意思完整正确，并将答案填写在答题卡标号为41—45的相应位置上。
It seems such a ______ (浪费) to leave the food behind.
Finally, I found my key at the ______ (底部) of my school bag.
The suspect was seen ______ (进入) the Building at 7 p.m. last night.
It was        (粗心) of Ricky to leave the door unlocked when he went to bed.
The students were learning about various _____ (机器人) When Michelle Obama visited.
B）根据句子意思，用括号中所给单词的适当形式填空，并将答案填写在答题卡标号为46—50的相应位置上。
After ______ (consider) the plan carefully, the boss agreed at last.
Though it’s my ______ (four) time to come to Tibet, I am still deeply attracted by the scenery.
When Xi Jinping arrived in Henan province, villagers there all greeted him with ____ (excite).
—You should throw away all old files, envelopes, and other        (important) things. —You’re right. I need to keep my office clean and tidy.
— I had two        (tooth) pulled out this morning.
—I’m sorry to hear that.