1£®We will become ____________(weightlessly) in space.

2£®The ____________(extinct) of the rare animals is largely due to the climate change.

3£®Please watch out ____________ the man who is staring at you.

4£®This is ____________(exhaust) work, but I manage to keep going somehow.

5£®Mary has written as many essays ____________ her brother.

6£®The system suddenly ____________(crash) and I forgot to store documents.

7£®If something gets into your eye, you can lift the upper lid ____________(gentle) and get it out.