Something went ________ with my computer so I could not complete my work.
Chọn đáp án A
Almost every language in the world has dialects and American English is no ________
China is a huge country, containing a ________ of culture and ________ of landscape.
The fire-prevention system is ________ by any small increase in temperature.
Vitamin D helps us not only build ________ teeth and bones but also absorb calcium.
Laura failed to give ________ reasons for her ________ from the meeting yesterday.
It is important to protect landscapes from the harmful effects of ________ pollution.
She was completely ________ because she was wearing a mask and sunglasses.