一、用所给单词的适当形式填空。
1. We will hold a class (meet) to discuss this plan.
2. Last week, I (explore) an online course about art.
3. She sent me a link, and I (click) it immediately.
4. The little girl is afraid of (go) out at night.
5. He was not sure if his sister could cross the river (safe).

1. meeting 2. explored 3. clicked 4. going 5. safely

1. 此处需要填入名词作hold的宾语，动词meet对应的名词形式是meeting，class meeting是固定搭配，意为“班会”。
2. 根据时间状语Last week（上周）可知句子要用一般过去时，动词explore的过去式是explored。
3. 并列句前半部分的动词sent是一般过去时，前后时态保持一致，click的过去式是clicked。
4. 固定搭配be afraid of doing sth. 意为“害怕做某事”，介词of后面要接动名词形式，go的动名词是going。
5. 此处需要副词来修饰动词短语cross the river，形容词safe对应的副词形式是safely，意为“安全地”。

()1. —She always takes good while reading English articles.
—Yes, that's why she makes great progress in English.

A.notes
B.experiments
C.ideas
D.sports

A

本题考查固定搭配，固定短语take notes意为“记笔记”，符合读英语文章时做好笔记、因此英语取得很大进步的语境，其余选项experiments（实验）、ideas（想法）、sports（运动）均不符合语义逻辑。

()2. My sister is going to a lecture on traditional Chinese culture next week.

A.attend
B.hold
C.join in
D.get

A

本题考查动词及动词短语辨析：attend表示出席讲座、会议等正式活动，attend a lecture是固定搭配，意为听讲座；hold意为举办，不符合语境；join in多指参与游戏类小型活动，不能和lecture搭配；get意为得到，不符合句意。因此正确选项为A。

()3. You should practice English every morning to improve your pronunciation.

A.aloud
B.hardly
C.loud
D.careful

A

空格处需要填入副词修饰动词practice，首先排除词性为形容词的C、D选项；B选项hardly意为“几乎不”，不符合句子语义；aloud是副词，practice English aloud表示“出声练习英语”，符合改善发音的语境要求。

()4. It's a problem, we need to discuss it with our teachers carefully.

A.easy
B.nothing
C.serious
D.personal

C

根据后半句“我们需要和老师仔细讨论它”的语境判断：A选项easy（容易的）不符合逻辑，简单问题无需和老师仔细商讨；B选项nothing是代词，不能放在a之后修饰名词problem，语法错误；D选项personal（私人的）不符合语境；C选项serious意为“严肃的、严重的”，符合句子含义。

()5. After losing his job, he his friends for advice and support.

A.got over
B.turned to
C.held back
D.swept through

B

辨析各选项短语含义：A. got over 意为克服、熬过；B. turned to 有固定搭配turn to sb for sth，指向某人寻求某物；C. held back 意为抑制、退缩；D. swept through 意为席卷、快速蔓延。结合句意“失业后，他向朋友寻求建议和支持”，只有turned to符合语义和搭配要求。

三、选择正确的引导词补全句子。
whether what how why that
1. I wonder you have finished reading the classic novel Journey to the West.
2. He didn't know made the little match girl so sad in the story.
3. The teacher told us we should finish our homework on time.
4. Can you tell me you will deal with the difficult problems in your homework?
5. I didn't realize it is important to protect the environment until I learned this unit.

1. whether
2. what
3. that
4. how
5. why

本题考查宾语从句引导词的用法，结合句意和语法规则逐一分析：
1. 本句表达“我想知道你是否已经读完经典名著《西游记》”，需要表示“是否”含义的引导词，选whether。
2. 本句表达“他不知道是什么让故事里的卖火柴的小女孩如此难过”，宾语从句缺少指代事物的主语，选what。
3. 本句表达“老师告诉我们应该按时完成作业”，后续从句是结构完整、语义通顺的陈述句，无额外特殊含义，选that，that在该类宾语从句中无实义，也可省略。
4. 本句表达“你能告诉我你将如何处理作业中的难题吗”，固定搭配how...deal with表示“如何处理……”，选how。
5. 本句表达“直到学完这个单元，我才意识到为什么保护环境很重要”，需要表示“为什么”含义的引导词，选why。