Today there are more airplanes ______ more people than ever before in the skies.
---Do you think their team will win the basketball match?---________.
Chinese president Xi Jinping visited Liangjiahe village, ______ he used to work in.
__surprised me most was__Mary spoke Chinese just like a native speaker.
Please remind me some eggs for the coming party.
In my view, biology is ________ chemistry, but a little easier than mathematics.