____ they are closest friends is not clear though they live together.
you understand this rule, you’ll have no further difficulty.
—My daughter has passed the exam. —Congratulations! She’s really intelligent. — .
Unluckily, my sister had her cellphone ______ in Guangzhou before she could find a job.
No one knows ______effects the GM material might have on the food chain.
With drink and food ____, the prisoner had to walk out of the cave where he was hiding.