---You see, I’m poor in Chinese, you are not good at English, and...--- That’s ____ we should help each other.
He was absent for weeks, so he had a lot of homework to ________.
The computer is in ________ bad condition ________ I can’t work with it.
I’m glad to say that he’s already finished ________ 50% of the book in these three days.
All possible means _______. However, nothing can _______ him dying of lung cancer.
Do you think ________ life on Mars?