I _____ you yesterday, but you weren’t in.

No matter how much you’ve learned and how high a standard of education you have had, you must _______ the people heart and soul.

If you want to sell your product you must _____ it.

---Tom is so worried about the test that he said he was going to study all night.
----Tell him he should quit _________and get some help. 

More than two hundred years ago the United States _______ from the British Empire and became an independent country.

The young nurse was very nervous when she ______ the doctor in operating on the patient.

-----I hope to go to Beijing with you.-----If so,your holiday arrangement must________mine.

He made a promise that he would_________us with dinner the next day,but he broke his word.

This is the new plan all the scientists want to see ________.
A. carried out        C. carrying out        C. to carry out        D. carry out

. We must be______that this year might be the worst in recent times for our economic development.