Wi-Fi connections are not subject to your data plan limits.
查看答案
Use Wi-Fi connections to download new apps and music if possible.
A. 对
B. 错
Identify the letterof the choice that best matches the phrase or definition.
Do you think a vicious circle is __________?
A. easy
B. difficult to get out of
If one thing predates another, does it appear ____________ it?
A. before
B. after
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