—This physics problem is too difficult. Can you show me _____, Wang Li? —Sure. A. what to work it out B. what to work out it C. how to work it out
--Hi,where are you going?See what the sign______! --Sorry,I__________it.
Mary doesn’t do her homework _______,so she always makes a lot of mistakes.
— Jim, remember to return this book by Friday. — ________.
— Excuse me, can I interview Mr White? — A moment, please. Let me check ________.
If you watch carefully, you can see ________ the man does the trick with the cards.