Sometimes proper answers are not far to seek ______ food safety problems.
A lot of research and studies have shown that Trench oil, taken out from kitchen waste, ______ the increase of cancers.
Don’t trust such people _____ praise you to your face but speak ill of you behind your back.
– I met Jackson at our school theatre. Can you imagine_____ well-known _____ an expert on ENT?
It is uncertain ___ side effects these weight-loss drugs will bring about, although hundreds of thousands of patients have taken it.
On the celebration of the university’s 100th birthday, he said, “I have never experienced __________ time here as a graduate of Tsinghua University.”