You must be ________ that what you are doing is quite illegal.

Compared with her sisiter, Jerry is even more _______ to, and more easily troubled by, emotional and relationship problems.

After five days of fantastic space trip, the two astronauts walked out of the spaceship, _____.

.It is _____that he has been addicted to the drugs and has difficulty quitting it.

________ and short of breath，Andy and Ruby were the first to reach the top of Mount Tai.