2. We hope we can even more closely in the future.
A. coorperate
B. coorperation
C. coorperative
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3. This year they have introduced 3 new products to their range.
A. extend
B. extened
C. extension
Fill in the blanks with the missing words from the background knowledge:When your are about to leave, it is always polite and friendly to say some to them before they leave.
It is for people to leave abruptly without saying anything, especially for .
一体化增长战略的具体形式有三种,分别是()。
A. 前向一体化
B. 后向一体化
C. 水平一体化
D. 反向一体化