单选题 It is because English is very useful ______.
【正确答案】 A
【答案解析】[精解] 强调句型题。在英语中有一类句型:“it was/is…that…”,句子的本身并没有实在含义,只起强调作用。句子中要强调的部分放在“it was/is”和“that”之间。如It was in 1949 that the People Republic of China was founded.当去除“it was/is”和“that”,句子结构仍然完整。所以答案为[A]。