— What time shall we leave for the airport?— It’s foggy today. I’m not sure __________ be closed soon. Let’s go now.
Miss Smith is very kind. We all like ______________.
Allen didn’t work hard at his lessons. ______, he failed in his exams.
We can put the prefix “un-” before the following words to give them the opposite meaning except (除了) _______.
----Would you please not smoke here? Look at the sign. ---- ________.
Peter’s drawing isn’t______________ Sandy’s.