—May I ask a question after class, Sir?
—______, but not during my lunch break.
A. I am sorry B. Anytime
C. Certainly D. Go ahead
________ no wonder that they had so much trouble.
A. This is B. That is
C. It is D. There is
It was the culture, rather than the language, ________ made it hard for him to adapt to the new environment abroad.
A. where B. why
C. that D. what
So difficult ______ it to live in an English-speaking country that I determined to learn English well.
A. I have felt B. Have I felt C. I did feel D. did I feel
（题文）“Never for a second,” the boy says, “ D__ that my father would come to my rescue.”
A. I doubted B. do I doubt
C. I have doubted D. did I doubt
There ________ priceless jewellery on display at the exhibition hall.
A. are B. have
C. is D. has
