单选题 Helen was 7 years old. One day one of her teeth began to hurt. She (16) in class at school, and her teacher (17) kindly, "What's the matter, Helen?"
"One of my teeth hurts." answered Helen.
"Tell your mother about (18) ," said the teacher, "and then go to see the dentist (牙医)."
That afternoon Helen's mother (19) her to the dentist's. The dentist looked at the (20) which hurt and then said to Helen, "It's very (21) . I'm going to pull it (22) , and then you're going to get a new tooth. It will be as nice as (23) next year." Then he did it with no trouble.
The next day Helen's teacher asked her about the tooth, "Does it (24) hurt, Helen?"
"I don't know. You'd better ask the dentist," Helen said.
"Why?" the teacher asked.
"Because the dentist has (25) it." Helen answered.

【正确答案】 A
【答案解析】由于牙痛，7岁的Helen在教室里cried(哭)起来。shouted意为“大喊”；laughed意为“大笑”。
【正确答案】 C
【答案解析】根据上下文老师的话“What's the matter，Helen?”可以看出，老师是在“询问”。spoke意为“说”，told意为“告诉”。
【正确答案】 B
【答案解析】it指代Helen牙痛这件事。
【正确答案】 C
【答案解析】take sb. to doctor's/dentist's指“带某人去看病/看牙医”。这里的doctor's和dentist's指大夫或牙医的诊所。
【正确答案】 C
【答案解析】从该空格后定语从句的谓语动词hurts可以知道，前边的先行词应为单数，所以排除teeth，而且Helen的mouth嘴并不痛，所以选单数的tooth。
【正确答案】 C
【答案解析】It's very bad意为“情况很糟，情况不妙”。
【正确答案】 B
【答案解析】pull it out意为“把痛牙拔出”。
【正确答案】 C
【答案解析】用the others指代其它的牙。
【正确答案】 A
【答案解析】still意为“仍然”，also意为“也”，very意为“很”。
【正确答案】 A
【答案解析】kept意为“保存”，pulled意为“拔，拉”，thrown意为“扔，抛”。“因为那颗牙放在牙医那呢!”