—Whenever you have difficulties, be sure to call me.--________________.
---Does your father go to work by __________ car every day?---No, he sometimes takes __________bus.
We usually have the first class ____________ 8:00 in the morning.
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) _______.