当你想帮助别人时,你应该说:A.Can you help you?B.I can help you.C.Let me help.
A butterfly ______ two ______of wings. A. has; pairs B. has; pair C. have; pairs
Betty is ______ a word puzzle. A. solving B. solve C. working
What score ______ you get? A. did B. do C. does
twelve ______ four is eight. A. Plus B. minus C. and
-_____do you like science best? -Because it’s interesting. A. Why B. What C. Who