—Why are you in a great hurry, Paul?---I have to, _____ I’ll be late for school.
_____ is necessary for us to finish the work in two days.
—Why does Jane feel so upset? —She failed the exam and she has no friends ____.
At the beginning, I found it hard to get up early. Now I _____ it.
The weather in Beijing is not ____ good ____ that in Hainan.
—There is ____ with my watch, so I don’t know the time. —Let me have a look.