It was in the lab ________was taken charge of byJohnson ________they did the experiment.

It is these poisonous products_____can cause the symptoms of the flu , such as headache and aching muscles .

A: I enjoyed the performance very much. B: Yes, it was really good. I think boy in white was the best actor.

You ________ not get my support if you do such a thing.[ ]

People in Tianjin are proud of ______ they have achieved in the past few years