–It’s too hard for me to learn English well.--Believe in yourself! You can do almost anything if you never ______.
His father had an important meeting just now, _______?
-_______ can the batteries (电池) keep these cool iPhones and iPads working?- For about ten hours.
- Have you heard that six people killed a young woman in McDonald's in Shangdong?-_______ bad the news is.
The careless boy lost his key, _______ he had to wait for his mom in the cold.
Your sister isn't at home. Can you help her_______ her baby?