Spending too much time on games can lead ______ bad grades at school.
A. in
C. for
B. to
D. at
When it comes to ______ online, we must never share our credit card numbers.
A. shop
C. shopping
B. to shop
D. shops
A large amount of personal data ______ collected by data brokers every day.
A. is
C. were
B. are
D. be
Some hackers steal information ______ to be ordinary users.
A. while pretend
C. while they pretending
B. while pretending
D. pretended
Too much screen time can ______ children’s health in bad ways.
A. affect
C. hurtful
B. effect
D. harmful
What is the purpose of a "Topic sentence" in a body paragraph, as shown in the essay structure PPT?
A. To give specific examples and details
C. To summarize the whole essay
B. To introduce the main idea of the paragraph
D. To list all the advantages of the Internet
This app can ________ all your online habits for the website.
Translation：长时间玩电子游戏会导致视力变差，还会影响孩子的社交能力。
Write two advantages and two disadvantages of the Internet in complete English sentences.