One of the most important questions they had to consider was__________ of public health
Green products are becoming more and more popular because they are environmentally _________.
—Are you going there with us? —If Mary wants to go, ______.
---Can you finish the difficult task in such a short time? ---No, it is beyond my __________.
---I’m afraid I don’t have the ability to make a speech in public. I’m too nervous. ---Don’t worry. You will overcome it _______if you practice more.
In my opinion, all Mr Li ______ good to his students in his class at present. He is very strict with them in their studies.