.The math problem is _______ hard for me ______ work out.
Again and again the doctor _____ the crying girl, but he couldn’t find out what was wrong with her.
–Many boy students think math is _____ English.--I agree. I’m weak in English.
–Would you like to watch the three-D film Titanic with me?--Certainly. I don’t mind seeing it again although I _____ it twice.
–Do you know _____ the sports meeting lasted?--Three days, from April 11th to 13th .
The underlined part in the word “ nature ”is pronounced as _____. A. /e / B. /ei/ C. /æ/ D /ai/